It was an evening to remember at Camp Nou, capped by Sergi Roberto's heroic last-gasp winner and confirmation that Barcelona would continue in the Champions League against all odds.
Luis Enrique's men had been written off after capitulating 4-0 in the first leg against Paris Saint-Germain, but fought back to win 6-1 and take their place in the quarters.
It was a tie fraught with tension, which looked impossible to turn around when Edinson Cavani made it 3-1 halfway through the second 45 minutes.
But while plenty of eyes fell on the referee for giving the hosts two penalties, Twitter fell over itself to congratulate Lionel Messi and the rest of Barca's battlers.
Wow unbelievable!!!!!!! Barca — Samir Nasri Official (@SamNasri19) 8 de marzo de 2017
Unbe-fucking-lievable! Greatest game ever. — Gary Lineker (@GaryLineker) 8 de marzo de 2017
More chance of my pet terrapin being named new Barcelona manager than Wenger, and my terrapin's been dead 43 years. — Piers Morgan (@piersmorgan) 8 de marzo de 2017
The greatest comeback in Sports history. Thank you for the great show Barcelona pic.twitter.com/jSIXxpjPM9— True Soccer Life (@TrueSccrLife) 8 de marzo de 2017
Against all odds, Barcelona are now through to the quarter-finals for the 10th season in a row.