Quote Originally Posted by Steeled View Post
It requires luck and timing but if the mob is not immune to Pacification (most bosses are), you can use the effect when a red is dropped and the red won't happen when it should. I've also "interrupted" that doom aura with Shield Swipe.
I have literally never seen the pacification cancel a cast that was already in progress. It prevents *new* casts, but if it can act like an interrupt, it seems to be incredibly rare.