Apaisement (52) - Reduces the radius that enemies will aggro you allowing you to move around enemies that would otherwise be blocking your path. This only works on Humanoids and Dragonkin type targets. It is easy to spam on multiple enemies so if you are fast you can provide skips for yourself and the group in key dungeons.
Casting
Apaisement on both enemies creates that Purple effect over their heads, reducing their aggro radius allowing you to slip by without drawing threat. Priest STEALTH......of sorts!