Raphinha scored deep into stoppage time as Barcelona secured a stunning 5-4 comeback victory over Benfica in one of the most chaotic Champions League matches of all-time.
The Brazilian was played through in the sixth minute of added time, while Benfica players were protesting for a last-gasp penalty at the other end.
Raphinha fired beyond Anatoliy Trubin to stun the hosts and provoke wild Barcelona celebrations as Hansi Flick's side secured their place in the last 16.
Benfica saw their furious appeals for a penalty dismissed by VAR, with the full-time whistle immediately sounding upon the restart to conclude dramatic match.
The hosts had led within two minutes with Vangelis Pavlidis tapping in from close range.
Robert Lewandowski equalised from the spot as VAR awarded Barca a penalty for a Tomas Araujo foul on Alejandro Balde in the 11th minute.
Two howlers from Barcelona goalkeeper Wojciech Szczesny gifted Benfica a two goal cushion.
Szczesny, who came out of retirement to resolve Barcelona's injury crisis, raced out of goal and collided with his team-mate Balde.
Pavlidis was on hand to guide the ball into the empty net to put Benfica 2-1 up.
The forward completed a first-half hat-trick from the penalty spot after Szczesny fouled Kerem Akturkoglu in the box.
Barcelona were handed a lifeline in the second half courtesy of another goalkeeping error.
Benfica goalkeeper Anatoliy Trubin's cleared the ball directly onto the head of Raphinha, with the ball bizarrely bouncing back into the net in the 64th minute.
The chaos continued when Benfica reestablished their two goal advantage four minutes later.
A Andreas Schjelderup cross was deflected into his own net by Ronald Araujo to leave Barcelona staring at the prospect of defeat.
Barcelona set up a grandstand finish when Lewandowski converted his second penalty of the net, with the referee waving away Benfica's protestations at the awarding of the penalty.
The Catalan giants then equalised in the 86th minute with Eric Garcia rising highest to plant a header into the Benfica net.
A dramatic conclusion followed when Benfica appealed in vain for a second penalty of their own on the night, only for Barcelona to break clear and score a winner through Raphinha.
Tempers flared at the end as the Portuguese side protested over the non-award of a spot kick in the build-up to the winner, with substitute Arthur Cabral shown a straight red card from the bench.
Raphinha hit out at the Benfica players post-match, with the Barcelona captain alleging he had been insulted in the aftermath of their winner.
'They insulted me at the end of the match, I insulted them back,' Raphinha said.
'If they respect me, I respect them. In my opinion they could have understood the situation, but they preferred to insult me.'