I have no way of proving it, but my Milotic just survived a Fissure due to friendship.

While fighting Groudon to catch it, it landed a Fissure on Milotic. Instead of it being the expected OH-KO, Milotic "toughed it out so i wouldn't feel sad." i like the whole friendship gimmick, but this a bit much...
So if y'all still think The Power Of Friendship™ ain't OP, idk what is.