Guardiola had grim forebodings of impending doom.
Turns out he was right.
Bayern Munich were being Bayern Munich and Arsenal were in danger of exit stage left in the first 77 minutes of the game.
Then Giroud, came off the substitutes’ bench and created a French revolution of sorts by scoring against the run of play.
He made the the most of a rare mistake from Manuel Neuer and his goal changed the complexion of the match.
The error from Neuer was after he had made a little earlier a save that was so sublime as to be almost superhuman.
Ozil scored a second in injury time to put the matter beyond all doubt.
Bayern fans who had staged a bit of a protest at the start of the game because of the exorbitant ticket prices left the place feeling more than a bit cheated by the way things had turned out.