The Spanish defender scored what could well be the goal of the season in Sunday's 5-0 win over Swansea, and is confident they can continue their goal streak on Thursday.
"It was important to win, that was most important, and then 5-0 of course is good for the team because the next game is the most important for the season and we have to score at least two," he said.
"It was a good reaction from the team. It was a really hard game against Zenit so it is good for us to have this result because now our confidence is there for the next game, which it is really important we win.
"They spent a lot of money so they have good players so we have to keep a clean sheet and then to score as many as we can."