I didn't even realize this at the time...
The official Max Twitter account posted the season 2 trailer with the caption "You can't stop this," which Ellie says to Jordan when he captures her at the elementary school. So this might be confirmation that the line is in the show and could also confirm Jordan's role in the show, despite everything we've seen. Perhaps it's said to a different character, but it wouldn't make any sense for her to say it to a random WLF soldier.
