Holy priest and AOE damage?

Massive AoE damage. What do you do about it, I must be missing something right?

Prayer of Mending is small and takes ramp.
Renew is small.
Circle of healing only does 13k
prayer of healing only does 10k
Holy word: sanctify only does 29k with a min CD

Lightweaver isn’t adding much either.

Pretty much this:

1- Prepare PoMs (A lot) it’s one of your main spells to mitigate raw AoE dmg. So be prepared and stack as much as you can before big dmg.
2- Holy words + Divine Image → Try to get big heals with your Divine image stacks + Trail of Light. Miracle worker works great here for multiple Serenities and more stacks of DI.
2a) - You can pop Apotheosis to complement this.

Are we talking about keys, raid, RBGs?

I assume keys.

It’s all about healing different targets and using holy words on time.

That’s the build I’m currently using (I don’t rely on PoM much).