Atletico Madrid forward Antoine Griezmann has refused to play down the importance of Tuesday's Champions League clash against Benfica.

The two Iberian rivals have already qualified for the knockout stages of the competition, but the victor in their final group match will top Group C and therefore potentially set up an easier last-16 tie.

Atletico lost 2-1 at home to Benfica in the reverse match in September, and Griezmann has revealed that the Madrid club want to gain revenge in Portugal.

"We'll have to be vigilant and try to win because there is a lot at stake. [The Atleti squad] knows each other better than in the first game and with recent results we're growing in confidence," Griezmann told reporters.

"We're very strong in defence and getting a goal against us is complicated, so let's hope. We want to win every game and get as high as possible. We also want to win because we want to be first in the group."

A draw in Portugal would see Benfica top the section due to their superior head-to-head record.