The pressure was on the Hoops to bag a result in Norway and get through to the play-off round. Brendan Rodgers made three changes to the side that were held at Celtic Park by the Norwegian Champions.
In came Erik Sviatchenko, Johnny Hayes and Callum McGregor, with Kristoffer Ajer, Olivier Ntcham and Tom Rogic being dropped.
Celtic completely controlled the first-half. Rosenborg seemed to sit-in the way they did at Celtic Park meaning that it was awkward for the Hoops to break them down. Rosenborg had a few chances in the first-half but nothing that troubled Craig Gordon greatly.
The first big chance of the match came just before the twenty-minute mark. Kieran Tierney whipped over a tremendous ball which Mikael Lustig caught on the volley only for his effort to go completely wayward.
Unfortunately, Erik Sviatchenko had to be subbed off shortly after this as his knee seemed to buckle. This meant that he was replaced with central-midfielder Nir Bitton who came on a dealt with the pressure immensely.
Immediately after this though, James Forrest nearly gave the Hoops the lead. A marvellous ball in from Callum McGregor picked out Forrest with his effort being tipped over by Hansen.
Towards the end of the half Bendtner and Brown had chances but both were easily saved respectably by both keepers.
Rosenborg seemed to immediately come out the traps in the second-half and started the half off terrifically. They upped the tempo of their football and hand the Bhoys under pressure with De Lanlay coming very close.
This effort was shortly followed by a cross which was very nearly met in the air by Bendtner. The travelling support were delighted just before the hour mark as Leigh Griffiths replaced Hayes, hoping that he would be the hero.
Their high spirit was very nearly dampened though as Jensen went extremely close with his effort from outside the box, with the shot hitting the side netting.
Eventually though the Celtic breakthrough did come. Sinclair played a great ball to James Forrest who thumped the ball in off the crossbar. Forrest has had a lot of stick of some supporters but stepped up to the mark tonight.
He was very unfortunate not to bag a second with Hansen staying strong and not letting Forrest score a one-on-one. Thankfully this missed opportunity did not cost the Hoops and James Forrest was hailed as the hero. Some players did not have great performances this evening but all that mattered was the result.
They coped well with the pressure and have now guaranteed European Football until Christmas. The play-off draw will be made this Friday, with the possibility of Celtic facing three former foes who they have already in previous years put out the competition.