Board Thread:Versus Debates/@comment-31338621-20190129080042/@comment-32685487-20190206194242

You can see Itachi's face and eyes up until the screen gets too bright to see anything, which is the moment Kirin lands. No Susanoo visible on panel so that means Susanoo was isntantly activated right before Kirin struck.

391 page 8 and 391 page 9, and 391 page 10, the tech is over and Itachi's robe is gone. He had used Susanoo the instant Kirin landed so he could survive the tech.