Last season's League Cup champions are through to the knockout phase of the tournament despite losing 1-0 to St Gallen earlier this week.
The midfielder told the club's website: "It was a relief to get through, now we can concentrate on the league for a while before our next game in the Europa League.
"We could have made it a lot easier for ourselves in previous games. We could have qualified a lot earlier, but we didn't get the results we were looking for, but we will take a lot from the group stage matches. Each match had a different experience for us.
"It was a very tough night for us. They held it pretty tight at the back and made it difficult for us to make the final pass and get behind them, while they were lethal on the counter attack too. So it was a very difficult match, but we're through and we're delighted with that."
Swansea are in domestic action against Norwich City tomorrow.