The 46-year-old actor told ET's Kevin Frazier while at The Great Wall
premiere in Los Angeles, California, that he's only wishing his longtime frenemy
"horrible things" when he hosts the 89th Academy Awards on Sunday, Feb. 26. As for whether he'll be participating in the show with Kimmel, Damon quipped, "Except for me throwing stuff at him, I don't anticipate [it]. He hasn't invited me, obviously."