The Swedish forward assisted the opener before scoring the winner as the Ligue 1 side won 4-2 on aggregate to advance to the last eight of the competition – read the full report here.
The 34-year-old told BT Sport: “We did a good game, we did a very stable game. We had a lot of patience in our possession.
“When we had a chance to strike we were creating the chances. We scored two goals and had more chances but it was enough to win the game.
“I think we wanted to control the game and let’s say they were letting us control the game and they were striking when we did our mistakes, and that’s how the goal came for Chelsea.
“But it was a solid game. We’re happy, we’re through. We’re doing good things, let’s continue to work hard and give our best.
“Where we end up we don’t know. We’re happy at the moment but we’re not satisfied, so hopefully we can continue.”