Hi guys im spilsburybob on server 49 and there seems to be a lack of info on how to beat the challenge fight for 3 stars, so here is the line-up i used to achieve this.

Iruka 3 star- x - x
Sailor Sakura 3 star- Guy 5 star - Earth Main 4 star
x - x - x

2 - Super Stone Fist Justu
3 - Petrifying Jutsu
3 - Stone Fist Jutsu Fall
1 - Bottom Force
2 - Steel Body

Pet - Dog of Hell

All ninjas are level 79, fully cultivated and awakened.

This is a full auto team and you could change sakura for kabuto or tsunade.

Iruka will die in the challenge fight and in the 4 pain fight but you will still get the 3 stars with two deaths