All Itachi has to do is Susanoo and kill the one who revives, Itachi can figure that out. Then, kill the rest. boh1
Actually, I think the Rennigan isn't genjutsu proof. Pervy Sage got 2 of em with that with the toads. Possibility?
and if Naruto can beat the 6 paths only using Sage mode and his rasegan, Itachi can def do it..