"It was an awesome night - from the final whistle and having 'You'll Never Walk Alone' sung by a packed Kop, to the way we played was a brilliant experience for everyone," said O'Donnell.
"It was nice for me to come back and see some old faces and I thought I did quite well, especially when you see the calibre of players we were up against.
"I must admit the heart raced a bit when I saw [Fernando] Torres coming on and then Robbie Keane. They are top-quality players and to play against them is something I will never forget."