The full-back made his first-team comeback in Arsenal's 1-0 win over Queens Park Rangers on Saturday, while midfielder Jack Wilshere also returned to the field following over a year out with ankle and knee problems.
"Me and Jack had a little chat before the game," Sagna told the club's official website. "We both felt a bit stressed, but it is a good stress because it is always a pleasure to play here at the Emirates in front of the fans.
"It was special for us, even more for him because he has been out for a long time. Me, I have been out for six months and the last time I played here I broke my leg, so it was very emotional."