Manchester City manager Manuel Pellegrini has urged his side to finish the job after they breathed life into their flatlining Champions League campaign by beating 10-man Bayern Munich 3-2.
Having seen Sergio Aguero put City ahead from the penalty spot after Mehdi Benatia had been sent off at the Etihad Stadium on Tuesday, Bayern hit back through Xabi Alonso's low free kick and Robert Lewandowski's header.
But Aguero punished a mistake by Alonso to equalise in the 85th minute and then exploited a Jerome Boateng error in injury time to complete a memorable hat-trick, meaning City will qualify if they win at Roma on Dec 10, and CSKA Moscow fail to win at Bayern on the same day.
"We have to do our duty. It is important," said Pellegrini, whose team are seeking to avoid a third group-stage exit in four seasons.
"We had to play two games - we won the first one, and now we try to beat Roma away. It also depends on what happens with CSKA in Bayern Munich. If they win, they qualify for the next round.
"We will see what happens in the last game. I said last week that if we have a mathematical chance to qualify, we will fight to the end. We will see what happens against Roma."
Aguero has scored 17 goals for City in all competitions this season and Pellegrini felt that his latest display proved that the 26-year-old deserves to be considered "one of the best players in the world".
Asked to divulge the content of his half-time team talk, after Lewandowski had put the visitors ahead in the 45th minute, Pellegrini said it had simply been a case of reminding his players what was at stake.
"During half-time, I said to the players that we have 45 minutes more to score two goals and they must fight to the end, because it was our last chance to continue in the Champions League," said the Chilean.
"That is why it has double merit, to beat Bayern Munich, who played very well, but also not to fall down on the spirit.
"Maybe another team would put their hands down, but I don't think this team ever do it. We fight to the end."
Bayern were already assured of qualifying as Group E winners, having won their first four games, but beaten coach Pep Guardiola said he was "sad" that his players had not been rewarded for their efforts.
Despite playing with 10 men for over 70 minutes following Benatia's dismissal for a last-man foul on Aguero, the German champions enjoyed 56 per cent of possession and completed 563 passes to City's 403.