Most creatures are oblivious to your attempts to thwart their advance.
Many of your crowd-controlling effects will work here.
Move away from other players when targeted by [Rain of Fel]
Kite [Spear of Doom]
away from the normal walkways to mitigate its impact on the encounter.
Eonar will provide portals to board the Paraxis and interrupt its [Final Doom]
When interrupting [Final Doom]
coordinate which Feedback effect you will take.