Also known as "The Transfer of the AI" quest.

First thing I do is make sure I have defenses. I recommend you run in Tank Stance and have a bunch of Block.
Second we need to destroy the nests in the cavern. There are 4 of them.

Third you need to keep the Relay Repair Droid alive. Highlighted in YELLOW, so that it can place the Antenna throughout the cavern highlighted in GREEN.

The best way I found to keep the Relay Repair Droid alive is to keep the attention of the Kubaza Beetle Drones on me highlighted in RED, DONT KILL THEM YET. Hit the Kubaza Beetles that try to hit the Relay Repair Droid then they start attacking you, then switch your target to yourself highlighted in BLUE to keep yourself healthy by healing.

Fourth Step the Kubaza Beetle Foreman arrives.

Kill the Kubaza Beetle train what you have been collecting to protect the Relay Droid.
Then Kill the Kubaza Beetle Foreman, I recommend you stay moving as he calls forth beetles to explode, you can avoid some of this AoE damage by moving around.

The Reward is 100,000 credits and 2 Mustafar Token of Heroism.