If your a preist, level 22 or above, you have an ability called mind vision. Its bugged, and if you are mind-visioning someone while someone attempts to cast a spell that controlls your body (like fear and mind control.. any others? blind? scatter shot? dont know)...
The benefit is, is that the ability is instant-cast and uses little mana, so if you see that someone is about to cast fear or MC, you just hit the button. When they use the fear/MC your mind vision cancels; so you dont have to cancel it yourself...