Naruto and Minato from one side, and Sasuke and Kakashi from Kamuiland.
Edo Hokages ,ORochimaru and the gokage will take on madara most likely. I dont care who wins, because obito is the main villain.
EDIT: Oops, misread the title.
He will probably do something brutal, extremely graphic, and MA15+ in the censored version, to madara.