I'm sorry but at the moment, the only thing Sasuke has on Naruto would be his defence (Susanoo) and even that is debatable against a TBB. Raikage dodged amaterasu and KM is faster than him. Amaterasu fire balls or whatever they are will probably incinerate a few of his KM clones if they are spammed in different directions but for the most part, they would be dodged by the rest. Sasuke's sharingan could read naruto's movements but cannot read the movements of the chakra itself. Pretty much like the fight he had with Naruto at the Final Valley. Let alone, if Sasuke could keep up with Naruto's speed despite being able to read his movements. Could be but he won't be reading the chakra's movements.
Though I agree that if Amaterasu ignites Naruto himself, he would be screwed. Unless his chakra shroud could repel them with a chakra burst emiting from his body. I haven't seen him do that except when he did it to Kabuto on 4 tails. As for KM though, I doubt that it has defence since Roshi managed to burn him during his fight with Tobi's paths. The one that would have defence would be 4 tails and 6 tails that he's shown. Or if he could use a version like Bee's V2 chakra cloak.
KM clones could be used as diversions though followed by Naruto in the background preping a TBB. If it has enough force to destroy Susanoo, Sasuke is dead. If it doesn't then like I said, Sasuke only has Defence on Naruto.
Just wait for Sasuke to show more feats or for him to get a new upgrade.