#but the thing is Naruto already overcome the consequences of rasenshuriken so it means he can use it and come out unscathed

[mochiajclayne]

I find it fascinating that Rasengan is technically an incomplete jutsu that heavily relies on shape transformation (changes the form and movement) and the complete version of it was made possible by Naruto through adding nature transformation (changes the attribute of chakra), specifically, Wind Release: Rasenshuriken.

I know this is an incredibly small detail but we have seen the lethal effects of Rasenshuriken (to the point that Tsunade even warned Naruto about using the jutsu as it is harmful on cellular levels not just to the enemy but also himself). It contains microscopic wind blades, too many to count even with Sharingan. My point is, Naruto is presented with obvious opportunities to use a powerful jutsu to stop Sasuke, especially in VOTE2 but he did not use it. It's a conscious choice and an intentional decision. He will do everything to stop Sasuke but he draw the line at killing the precious person he's been chasing for years.