Naruto will fight with Tobi. He will use his new Kyuubi ability to create a giant ball of energy , he use the ninja ability to communicate with everyone else to urge them to lend their chakra to him. With that he is able to successfully defeat Tobi and his Moon attack.

Later, Naruto uses the Rinnegan to ressurrect all his dead friends again, including Kakashi.

At the end of the series he is seen fighting in a Ninja tournament. He then meets up with the reincarnation of Tobi , and decides to take him away to train him.

you obviously never read DBZ before if you dont know where I got the idea from.