Arsenal defender Hector Bellerin insists they can still make it into the next round despite loss to Barcelona.
Messi came alive in the second half, slotting in a first, before burying a penalty to complete his brace.
And Bellerin bemoaned Arsenal’s missed chances against Barcelona, but is confident they can progress.
Speaking after the defeat, Bellerin told reporters: “We have had several chances to score first. It is hard against a time like this one and when you do not score, if they have chances, they can score. The first one was in a counter-attack and the second one in a penalty.
“We have the heads up. We will face the second-leg as we did with this first-leg. We are a side that play good and we still have a chance. It is something very difficult, but we never give up.
“We have been a compact side. But were not as lucky as they were. We know we need to be more lethal.”
Bellerin – a Barca youth academy product who swapped the Catalans for Arsenal in 2011 – added: “Facing Barcelona was very special to me. That is where I was grown up.
“But I defend another shirt now and I am so proud of representing Arsenal.”