I've had just as frustrating ones with my monk, Elite versions of the sand golems in Kulle's area with Teleport, Shielding and Jailer, the main elite had Arcane as well. It was just frustrating because even though I have around 65% reduction from both armor and resistances the minions were hitting me for around 25k damage. In the end to kill them I had to split them up and kill them one at a time, kiting in a circle until my invulnerable CD and Blind were up then attack and continue kiting. Overall it was frustrating and felt like a waste of time.