كتب : Omar AbdelAziz
Egypt striker Ahmed Ali started for the Saudi champs, before being replaced by veteran Yasser Al-Qahtani near the hour mark.
Romania international midfielder Mirel Radoi opened the scoring with a deflected freekick on 18 minutes as Ahmed Al-Fraidi made it two on 55 minutes.
Radoi then had a chance to put the game to bed from the spot, but his poor penalty was saved by Nassr keeper Abdullah Al-Enazi.
Hilal will face the winner from the other semi-final match between Ittifaq and Wehda, who are managed by Egyptian Mokhtar Mokhtar.