A couple of tricks to try (I am a chronic "re-starter", so have done this fight a lot). Teleport is your friend, even if it is just with the gloves. You can teleport Kniles to you and beat the stuffing out of him (for me, physical damage until armor gone, then knock him down, dead in round 2) or if you are in the right spot, you can teleport him into one of the cages, which gives you a few minutes to whittle down the silent monks.