Guardiola's former teams Barcelona and Bayern Munich are among City's potential opponents in the next round, with the draw for the knockout stages to be held on Dec. 11.
"We play to win the games and after that we will see how things finish," Guardiola told reporters after the match.
"It is important that City have got 15 points at this stage for the first time and we are going to go now to Shakhtar to try to finish well and to try to go and win the game.
"In the last 16, it doesn't matter which one (you get), it always will be complicated."
Playmaker Kevin de Bruyne will miss City's final group game at Shakthar Donetsk on Dec. 6 through suspension after picking up his fifth yellow card of the campaign but Guardiola had no complaints against the Belgian's booking.
The Manchester side have an eight-point lead at the top of the league and travel to promoted Huddersfield Town on Sunday.
(Reporting by Aditi Prakash in Bengaluru)
