anyway to do this. I've tried 10 times.

Master of Fire Phase

15 seconds later Aluriel will cast Animate: Searing Brand Icon Animate: Searing Brand, which will raise Fiery Enchantments from the Burning Ground. They will begin casting Pyroblast Icon Pyroblast, deals high Fire damage to a single target.
I'm 396, and have cleared other NH bosses on heroic. Pryoblast is instant death. No way to interrupt.

Is there any other way for Disc priest to do this (not die instantly from Pyroblast)