It was their first game since the passing of former coach Tito Vilanova.
Mascherano said: "Each one of us are getting on in our own way, everything is so fresh, and the only thing we can do is stand by his family and try to share their pain.
The defender then went on to recall some good memories that he shared with Tito Vilanova.
"Tito always treated me phenomenally well, and whenever we won a title I would hug him and thank him for the experience." He added: "What we have to do is fight until the end like Tito, we have a lot of fight left in us. We know that his battle was a hard one, but we never could have imagined that this would happen, until it did."
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