Dumbledore is explaining why he sent Newt to New York City during the first movie and it was all about Credence (Ezra Miller).
As it turns out, Dumbledore knew that Grindelwald would still be looking for Credence because the dark wizard had a vision that an Obscurial would kill the man he fears most.
Unfortunately, we can’t show off a clip, but Hypable has a description of the scene in question.
The deleted scene is from early in the film during Newt and Dumbledore’s first conversation in London.
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