Celtic may have lost to Salzburg on Thursday night but they still progressed to the Europa League knockout rounds.
Brendan Rodgers' side knew a point at Celtic Park would seal their passage to the last 32, but they fell behind when Moanes Dabour netted in the 67th minute.
And Celtic would find themselves two goals down when Craig Gordon gifted Fredrik Gulbrandsen Salzburg's second of the night.
Olivier Ntcham pulled one back for Celtic in the 95th minute but that only proved to be a consolation.
But, in a massive slice of luck, Rosenborg equalised against RB Leipzig in the 86th minute to ensure Celtic would finish second in group B.
Celtic will also be loving the fact that Rangers crashed out of the Europa League following a 1-0 defeat to Rapid Wien.
Even Moussa Dembele, Celtic's former striker, seemed to enjoy it.
The French striker left the club on bad terms this summer when he forced through a move to Lyon.
But, he enhanced his reputation massively with his former club by posting a tweet laughing at Rangers following their exit from the Europa League.
He also congratulated Celtic, while also sending a touching message to Leigh Griffiths, who is currently taking a spell away from the game due to personal issues.
Dembele wrote: "Great European week 😊. Qualified for my first Champions League knockout stage games, Celtic going through, Rangers out😂...😊💪🏿! Thought to Griff, hope to see him back on the pitch soon!"
That's one way to win back the hearts of many Celtic fans.
Dembele's tweet almost instantly went viral as fans of the Glasgow club commended him for his words.
Rodgers hailed his players for managing to progress from the group stages.
"There's always that initial mixed emotion after you lose a game," he told BT Sport, per the Daily Record.
"But this campaign was over the course of six games. You see how tough the group is, you see how good RB Salzburg are.
"And obviously playing against a team like Leipzig, from one of the top nations in Europe, to get through above them.
"And to go to Rosenborg and get a result and beat them twice, it's been an absolutely brilliant effort from the players to finish on nine points in a group like that.
"It's an incredible effort with all the games the players have been playing. I'm so, so proud of that because we deserved to get there having finished second with nine points."