Board Thread:Versus Debates/@comment-27418151-20160108230836/@comment-25122992-20160111151219

The seal requires to put out a scroll, then open it and wave the nessessary hand seals. This time is enought for Amaterasu to consume at least a half of your limb, and since Jiraya didn't show any fast-regeneration feats, this injury would but him at serious disadvantage. But you're right, it's hard to say something about the situation or event never shown in the series, but it also means that there's no evidence if Jiraya really created some other fuinjutsu to deal with Amaterasu cause it was never shown either.

So, it stil was Itachi who cancelled Amaterasu back then. Maybe, he did so because of the strain, but I have a feeling he put the flames out only because they were about to consume Sasuke, and the latter's death wasn't actually included in Itachi's plans.