Itachi takes this with low to mid difficulty at best.
Summons can be controlled with sharigan genjutsu.
Big target to amaterasu
Big target to the totsuka sword
Big target to yasakas magatama
Sm naruto might be fast but his speed is inferior to A in v1 let alone v2 and thats what he needs if he plans to evade amaterasu.
Itachi in v1 susano should be able to tank frog katas after all its this mode that allowed him to tank kirin and its fair to say kirin's is leaps and bounds stronger than frog katas. Naruto's odoma rasengan was takned by madara's v1 susano, v1 susano itachi used to tank kirin, but also due to the yata mirror it saved itachi. Sasuke v1 or madara's v1 susano cannot tank kirin.
Tsukuyomi would mind rape naruto if he gets caught. A lot of people would say naruto is immune to normal genjutsu because of natural energy and that is actually wrong. If i remember correctly its said that an external source must disrupt the chakra. Sm naruto only gatters natural energy when he stands still, otherwise his clones is what contains the natural energy and is already infused on him.
This fight would end before naruto can use 6 tails, but lets say it doesnt.
Sasuke with a mere sharigan was able to suppress the fox and with that naruto wasnt able to go crazy. See no reason why somebody who has mastery of the sharigan cannot repeat the same feat. Secondly its said that one of the ms purpose is to control the fox and with that, itachi can take control or suppress the fox within naruto.
Thirdly naruto in 6 tales has no mind of its own and a raging animal is not winning against somebody like itachi, you have to be smarter than that.