[Carte Blanche]

Id go into the station mode after his flop raise. Unless hes bad a flop push will only fold out worse hands. He might think his PP is still good or 54 just got counterfeited and hes trying to take the pot. The only hands I can see that beat you is a flopped set, unless he decided to raise with T9 or something like that which is possible but not that likely. Problem is your hand is pretty much face up so it comes down to if hes smart enough to realize it.

Vs an unknown I would call the turn and call a decent size river bet. If he pushes Id puke and steal his cards.