The German stopped the Celtic striker from 12 yards at 1-0.
Celtic's Moussa Dembele has his penalty saved by Barcelona's Marc-Andre ter Stegen
Celtic were unceremoniously put to the sword by a ruthless Barcelona yesterday evening in the Champions League.
The Bhoys were outplayed throughout the game and suffered a 7-0 defeat.
But they could have made it 1-1.
Moussa Dembele was brought down in the box by German goalie Marc-Andre ter Stegen and then dusted himself to step up and take the resultant penalty.
But his effort was saved by the Barca goalie to keep Celtic at bay.
Celtic's Moussa Dembele
After the game the German suggested he had done his prep on Celtic’s penalty takers ahead of the game – which helped him save Dembele’s tame effort.
He is quoted by Marca as stating:
"I've been lucky to stop [Dembele's penalty] but I think that penalties are a bit of luck and of course some preparation beforehand.
"I was late, it wasn't a strong contact but [Dembele] does well and I couldn't stop.
"I felt good, the fans support me and this is something that I really like.
"To feel the fans behind me is unbeatable."
Barcelona's Marc-Andre ter Stegen saves a penalty from Celtic's Moussa Dembele
Celtic manager Brendan Rodgers felt this moment was pivotal in the game. If Celtic had levelled at 1-1 it might have created some nerves in the Barca camp – especially after they lost in La Liga at the weekend.
Unfortunately for the Celtic boss, that suggestion has certainly looked unlikely in the aftermath of the game.
Barcelona were simply on a different planet to Celtic in terms of talent and it showed in the scoreline.