Using fire devils, since they deal fire damage and are also inmune to them, they are gonna be a big help with no chances of dying.
Wear SSAs, and might rings.
Single target or double target, no more.
Imbue yourself with the same element proteaction you are gonna be attacking.
And the way I did it: as an ek I went with protection, prismatic ring, etc., and I attacked with full damage BUT with 2 druids healing me.