You have to pass to beat Auburn. Their defensive line is dominant. The held Georgia to 141 yards rushing on 36 attempts. Georgia struggled in the game because they also struggled to throw the ball with only 110 yards passing.
Najee is better than any of the RBs on Georgia, but their o-line is legit. You can't lean on Najee too much in this game. Play conservative football and you will lose. Where you have an advantage is in the WR/DB matchups. You only win this game if Mac can get the ball in the hands of your receivers.