Instructions
Keep your distance from Naruto. His fighting style is very close-range, so he will charge at you throughout the battle. If you continuously back away from him, he will have a hard time landing any blows.
Send Shadow Clones to fight Naruto. Every time you create a Shadow Clone, it will run forward and start attacking Naruto. You can create several of these at a time, depending on how full your Chakra meter is. Overwhelming Naruto with four or five Shadow Clones will stall him for a few seconds while you retreat.
Strike Naruto with your Raikiri attack while the Shadow Clones are fighting him. Naruto will be too busy fighting them to pay attention to what you're doing, so you can rush in with Raikiri to do a good amount of damage. Retreat immediately after landing the blow.
Avoid close combat fighting. Naruto's combos are strong, and he lands a lot of blows with each one; all he needs is a single opening and a well-placed combo to deplete as much as 30 percent of your life bar.
Repeat the pattern of retreating, sending Shadow Clones and attacking with Raikiri until Naruto's life bar is depleted.