Fortunately Velgarth magic is really good for putting out fires, even at a relatively low power cost. Reverse weather-barriers go up, keeping the fires from getting hot enough to spread without otherwise being too obtrusive, then chilling them until the fire loses momentum and goes out as soon as the casters have withdrawn. 

Withdrawing forces from a city is never the most organized process and Leareth can take advantage of this, throwing compulsions at casters and then at as many soldiers as he can reach to get 'lost' and not make it out, or, if he thinks he can get away with it based on their thoughts, to be seized by sudden doubts and fears and decide they would rather be Aroden's prisoners than fight the rest of this war on Asmodeus' side. 

Some of them are in fact in enough doubt (it's not Aroden, it can't be Aroden, but whoever it is Asmodeus hasn't crushed them like a bug yet -) that the compulsion can drag them to a terrified surrender. - presumably he'll kill them and then they'll go to Hell and it'll be so so much worse for having ended like this -

Nobody is getting killed today.

As soon as the city is enough under their control to make it safe, he Gates in all the Healers he was able to rustle up from Velgarth on short notice, which is about fifty of varying Gift-strengths. Aroden has some druids for Healing; they generally won't participate in battles but they're willing to show up after the fact and treat casualties.

Velgarth Healing isn't as nearly good as cleric healing for battle wounds, but it's very good for triage, and can be used sparingly yet to great effect to reduce deaths from wounds that would otherwise fester or slowly bleed out, even if the recovery process will still be a lengthy one. 

The critically wounded on his own side come first, of course, but after that, the Chelish locals are triaged alongside the invaders. Anyone who could plausibly still pose a threat at all gets a compulsion that prevents them from trying to harm anyone around them, because Leareth isn't stupid.

None of that work is very high-power, but Leareth is still tiring. He casts Lesser Restoration on himself, which brings him back to full energy; he saves the innate reserves replenishing spell for the next iteration.

And then Vanyel's mind reaches out and brushes his, via the emotionless interface of the communication spell. <We are almost ready to close the Worldwound. Aroden ought arrange to be there in nine minutes. Does that work> 

<Yes> If it were still the middle of the fight he would have to ask Aroden, but this isn't bad timing at all. 

Taver paces the streets, surveying the destruction. Looking for minds, both to find any injured Chelish soldiers and civilians who're hiding out of sight, and to gauge the current mood in the city. 

There are lots of hidden people, shut away in their houses waiting for news - whispering about the roses - most of them too scared to even do that, even if this is Aroden's invading army it's an invading army and that's always, always bad news, and if you're likely to be in Hell by the end of the day it doesn't matter, really, who this is or what they want.

On Aroden's request, Taver relays to every mind left in the city that the battle is over, no civilians nor wounded soldiers will be killed if they surrender, Aroden considers the citizens of Egorian his people and will provide food and water and healing for them if needed. 

Aroden does not particularly expect this to be believed. He prepares to teleport himself to the Worldwound, leaving Leareth behind to manage in his absence, which will hopefully be brief. 

Vanyel clears the area around the Worldwound one last time and ten seconds later Nefreti finishes her True Resurrection and brings him back to life among the Heralds defending the wardstones and five seconds after that Aroden arrives. 

Nefreti is a red dragon circling the wardstones, lighting demons on fire with her breath and now that she's done with True Resurrection flinging Fireballs at them as well, from her front talons.

Aroden spends ten seconds orienting, scanning the area with his eyes and all his various permanent magic-senses.

Then he takes out another diamond, Dimension Door's across to the other side of the ward-stones barrier, and casts Wish. A wording he figured out nearly fifty years ago, actually, when actually making it close enough to close the Worldwound was a distant dream.

It takes only seconds. 

....well, that's that, then. "I think I'm going to go to Cheliax, meet up with Mahdi and Hagan," he says to Vanyel and Yfandes.

Vanyel nods, seriously. "Thank you so much for staying. I really appreciated you being around even if I was mostly, er, racing back and forth between exploding and being dead and not actually talking to you. I might Gate over later - tell Leareth he can contact me if I need to do something ridiculous over there, but for now I'll stick with some nice civilized demon fighting." 

"I'll let him know." He looks up at Aroden and decides he is way too intimidated to ask if he can hitch a Teleport back to the battlefield and goes to track down the pharaoh's people who were shuttling Vanyel, instead.

Aroden doesn't wait around, anyway; he scans the fighting one final time, notes that it seems to be pretty under control now that the demons have no source of reinforcements, and teleports back, having been gone from Egorian for barely a minute. 

The pharaoh's people will take him back to Sothis and from there he actually pings Mahdi, because the pharaoh doesn't want forces that directly serve him involved in the war in Cheliax. 

:I can fetch Fazil, right? Real magic healing would be really nice...:

:Yes. The Worldwound is dealt with, then?:

:Apparently.: And he leaves and comes back ten seconds later. 

:Hey, Leareth. Injured are where?:

:Coordinate with Taver, he knows where everything is: And Leareth informs Taver to pay attention to Fazil's mind. 

Taver directs him to the area where they're triaging the seriously wounded. 

He has deep respect for Aroden for figuring out how to do this at all without a cleric but also he can heal every injured person within thirty feet of him to full health seven times (he'd rather only use some of those now) and then stabilize an arbitrary number of additional people, taking about ten seconds for each of them. 

The Velgarth Healers are extremely well organized, and know how clerics work at this point; they can shuffle and cram a really impressive number of the worst-injured people into a thirty-foot radius of him, most of whom have been minimally Healed the Velgarth way so that they're not actively dying but are still pretty miserable. 

Once he's done that a few times: if his magic for stabilizing people makes them stable enough to move safely, maybe he should take direction from Taver, who's currently scanning the entire city for injured people they haven't brought to the central area yet, and then others without healing magic can transport them back. 

He can take direction from Taver though he'd like his party with him if he's going to be running around the whole city which probably still contains a lot of conquered people who are mad at them.