# Let my enemy be ... let him who rises up against me be

The two clauses emphasize Job's strong desire that this should happen.

# Let my enemy be like a wicked man

"Let God punish my enemy as he punishes wicked people"

# let him who rises up against me be like an unrighteous man

"let him who rises up against me be punished like an unrighteous man"

# him who rises up against me

"him who opposes me" or "my adversary"