Well depends on which version, game or comic. Because honestly there is such a disconnect with the comic version & game version of Damian in injustice that they're completely separate people. Comic Damian (Injustice) is...mislead, kinda tipping towards evil at sometimes, but he's redeemable. I mean, if we're going by the He-Man crossover to by, where Damian becomes Batman, saves his father, before getting his neck snapped.
So, Jon Kent meets Damian during Injustice 2? Well game wise, Damian spent majority of his time in a cell, then got released by Supergirl. An article did state it was before he got released by Supergirl, so Jon meets Damian in a cell.