The Chelsea skipper was given his marching orders in the 37th minute at Camp Nou for needlessly driving his knee into the back of Alexis Sánchez moments after Barça had taken the lead on the night through Sergio Busquets.
He told Sky Sports: “At the time I was bewildered to be honest because I was trying to protect myself a little bit – but looking at it on the replay it does look like a red card. So no complaints from the replay.
“I’ve let the lads down, they’ve performed brilliantly. Hopefully this doesn’t take away from their performance.
“Obviously I’m disappointed but I’m absolutely delighted for the lads, to come here and perform the way they did and get the result they did.
“I feel as though I’ve let them down, I’ve apologised to them – I want to apologise to the Chelsea fans as well – but the lads deserve to be there.
“It’s massive for the football club. Three or four months ago no one would have predicted us being in this position, so I’m delighted.”
Following Terry’s dismissal, Andrés Iniesta stroked Pep Guardiola’s men into a 2-0 lead with a neat finish before Ramires pulled a goal back for the Londoners on the stroke of half-time.
Lionel Messi spurned Barça’s best chance after the break when he smashed a penalty onto the crossbar as Barcelona turned up the pressure.
But 10-man Chelsea defended heroically, and a dramatic night was capped when substitute Fernando Torres broke free and tapped home after rounding Víctor Valdés.
Frank Lampard hailed an “unbelievable” result after the game. He said: “It’s one of the finest moments I’ve felt in a Chelsea shirt. What a performance.
“I know it was backs-to-the-wall and people want to see beautiful football but with 10 men for 50 odd minutes, to be 2-0 down here and to perform like that is unbelievable.
“There was a determination about us and in this game you get what you deserve and we were all in it together today. At times we rode our luck but you make your own luck.”
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