You outmaneuvred him.

The moment you felt hands on your back, your combat reflexes kicked in. You twisted in place faster than he could react, turning to see him standing behind you, cock erect and posed to be shoved right into you. In slow motion, he tries to transition the push into a grab, but by then, his opportunity has been lost. You twist around him, tripping one leg under his for good measure, and blitz out of the room. The robots try to stop neither you or him, but you make it back to your cell before he even realises what's happening.

Only when you arrived back in your room did you realise that you're still wet and naked, with no towel or clothes. You tried to dry yourself with spare bedding, but it wasn't great. What's worse, that stunt may have cost you the last of your power supply.

The next morning, you woke up feeling lightheaded, with a flickering empty battery symbol in the corner of your vision. You tried to get out of bed, but instead fumbled in your sheets, falling off to the ground with a clang of metal limbs on concrete, and dazing yourself.

You eventually managed to remove yourself from your bedding, and find yourself sat naked on the side of your bed. You clench and unclench your mechanical hands repeatedly, and find they respond with a similar speed and power to before you had your implants in the first place.

Guess you'll just have to hope the other inmate sharing these cells with you won't try anything like that again. After all, he doesn't know you've been reduced.