Note: I searched this battle on this site and it didn't come up. If this has been done before, my bad, I didn't see it.
Seeing how Naruto's power has greatly increased over the year, I think it would now be an interesting to put him up against Yusuke from Yu Yu Hakusho.
Setting: Both fighters are in their prime (Yusuke at the end of Yu Yu Hakusho and Naruto as of March 2014)
The battle takes place on Earth.
Summoning is allowed.