naruto can easily create a chakra arm to block it and then disperse the chakra, but use if he was hit directly his chakra clock would tank it . . . .which he could then make a chakra arm to push amateratsu off
- hold off his Amaterasu with Senjutsu cloak or with chakra arm shielding him.
- blow Amaterasu using Kurama's roar
- use truth seeking balls in deffensive manner or in offensive manner to nulify it
However Currently not just Amaterasu aka black flames is threat but Enton/Kagatsuchi definitetly is.
like here:
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I see only Naruto's truth seeking balls as possible counter to Enton/Kagatsuchi.
Naruto's cloak would be useless as Sasuke made black flames dense and solid using Kagatsuchi.
Kurama's roar would be useless as solid and dense black flames pierce and can withstand shockwave.
However goudama should work, unless Rikudou chakra enhanced Kagatsuchi is really deadly considering that Kaguya was forced to dodge.