"One other attribute a combo has is base energy cost. This is the minimum amount of energy the Pokemon needs to execute the combo. If it has less, the combo fails and the Pokemon faints from exhaustion. If the combo is a same-move combo, the base energy cost is the cost of using the move on that action and the following action, with all modifiers like STAB and consecutive use penalty factored in. If the combo is a different-move combo, the base energy cost is the cost of using one move on that action and the other move on the following action, with all modifiers like STAB and applying consecutive use penalty to whichever move (if either) was used on the action prior to the combo. The exception is if either move in the combo states that it requires the full amount of energy to use, like Explosion. In this case, the base energy cost is equal to the combo's total energy cost."
Copied Straight from Handbook...
So Aura will not get any damage from combo while Nohface will faint due to exhaustion...
Also if its not too late, can I give Aura an Exp.Share to hold ?