Trent Alexander-Arnold's quick thinking from a corner caught the visitors off guard as Origi converted to put the Reds 4-0 ahead in the second leg of the semi-final.
So what was the captain's view of the moment Anfield's greatest ever European comeback was completed?
"I think I was sort of talking to someone and organising something, just protection for the corner," Henderson told UEFA.
"I'd turned around, I'd seen the ball flying into the back of the net. I didn't really know what had happened.
"It was an amazing goal to score in a game of that magnitude.