He will save himself, by perfecting sage mode mid-battle.
yup...this would be the best bet...
1. using 9 tails would be a little bit early, its not the real battle yet so he needs to
surpass this easily, that kyuubi technique would be for his final confrontation, its either for madara, sasgay or kaburochimaru...hehe
2. if naruto clears this 6 bodies of pain easily, that means
his strength would be comparable at least to a sannin level, like his master, jiraiya...
just as i've said before he
really needs to accomplish this without the help of anyone because all of the konoha ninjas are relying on to him right now, and take note that those bodies are still just puppets of nagato...as shika's father said:
"if he mastered the sage techniques, the best teamwork that we can do is to stay away..."
"he's on a whole new level right now"
that's all folks!