The victory takes City to 19 consecutive victories in all competitions and Guardiola's men are now unbeaten in 26 matches. Bernardo was delighted with the victory but feels that there's still a lot more work to be done.
"It was a good game for us, I think it's a good win and a very important win as we know how tough this competition is as one mistake can mean that you are out.
"We tried to play simple, dominate the ball as we always do, to create chances and score goals. It is a good win.
"It's my fourth season here at City and it's a great squad, we have great staff and it's a pleasure to play for this team.
"So far it has been a great season for us. We need to keep going because we're only halfway through.
"We have a map and a way of playing, and players get injured, some players cannot play for many reasons, but our style doesn't change. The team keeps doing well and that is a very good sign."