The hosts took an early 1-0 lead through new signing Alexandre Lacazette in the opening Premier League game of the season, but conceded two goals in quick succession as Shinji Okazaki and Jamie Vardy fired the Foxes ahead.
What he did defensively towards the end of the game - Gary's just mentioned the back four that Arsenal had - without him at the end you fear Leicester would have got the equaliser.
Arsene Wenger's inspired changes paid dividends, though, as Ramsey levelled things up and then two minutes later Giroud turned the game completely on its head as Arsenal ended their opening-game hoodoo.
After undergoing solid preparation for the EPL opener, including beating Chelsea in the Community Shield, Arsenal were expected to start the season in a serene manner - score a couple of goals, make that back three look solid and pick up the three points without too much fuss.
"Obviously for the neutral it would've been a great start, just watching it from the outside", the former Manchester United striker said.
"He made a decision to stay and it was one of the great days of recent weeks for me".
Marc Albrighton served in a flawless ball from the left, curling a cross for Vardy, who capped the sequence against the run of play with his first goal of the season.
Lacazette is the seventh Arsenal player to score on his first Premier League appearance.
"That's what we're aiming to do", he added.
But Arsenal's defence, with essentially two full-backs playing in their back three, were soon caught out having been given a warning when want-away Leicester winger Riyad Mahrez volleyed wide.
Craig Shakespeare's side boasted numerous players, and characteristics, that saw them shock the world to win the title in 2015/16. We can take heart from the way we went about it but in those key moments we needed to be a bit more streetwise.
"At one stage I opened the door for him as I knew I had many strikers, and in the end he chose to stay".
"Once again, we had to come back and the team showed it was very well prepared because it could cope with the unpleasant situation", said Cech.
"The season started with a lovely game which met all expectations".