Change the voice: "Do not pay him anything."

Let him not will be paid anything.

Let him not be paid anything.

Let don’t pay anything to him.

None of these

Negative imperative sentence → passive voice starts with "Let... not be + past participle"

"Do not pay" → "Let... not be paid"

Object "him" becomes the subject in passive.

Correct passive voice:

Let him not be paid anything.