Is there a way to tank all of kosis mechanics wave 20+

Currently I only manage to kill kosis 50/50 after wave 20.I have 9.5k life max res 75 chaos res, 90% phys dmg reduction and all ele flask+basalt and granite flask all perma up due to charge gain on hit.But he still 1shots me for my whole hp with the explosion.Any item skills I can take to mitigate that?

maybe with some build with huge energy shield and recovery?

I guess you die to physical damage because you got 90% pdr against weak mobs not heavy hitters