On this day (25 October) last year a hard-fought draw with Dortmund ensured Manchester City were Group G winners, qualifying for the knockout stages of teh Champions League with a game to spare. A crowd of 81,000 watched this goalless game. Highlights below:
https://www.mancity.com/citytv/mens/borussia-dortmund-manchester-city-highlights-63802321
City went on to win the Champions League that season of course! There are plenty of articles on here about the 2023 Champions League such as:
Gary James' Football Archive 