Some might say that this is a bit common sense, but you can actually cast two spells with only one damaging spell towards you.
Since this is the tricky part of the fight, I guess some people might use the help that they can get on it.
What to do:
Cast a heal with cast time, and immediately after cast an instant cast healing over time effect or other instant heal. You will only get one lightning bolt towards you.
Just let the thread die if it was not helpful, I'm aware that I might get flamed.![]()