How to beat JMK in conquest?

Spirit_of_Exar_Kun

Trying to finish normal mode for the first time and he is all I have left. What disks should I use to help a SLKR team beat him? I know he makes everyone Immue to crit if they have prot up (read: all the time) Is SLKR even going to have a chance?
My roster, for the curious.
https://swgoh.gg/p/823143541/characters

mariogsh

Volatile accelerator, amplify agony and thermal exhaust for the win

Caustic Emissions would help too