Spurs sit second in Group B, on the same points as Inter, who face PSV at home in their final group game.
It means a victory in the Nou Camp on Tuesday will send Harry Kane & Co through – and even a draw might be enough.
But Vidal says Barcelona, who have already secured top spot. won’t be going through the motions.
He said: “Let’s be clear, as Barcelona players we want to finish this first phase without losing a game and with ours heads held high and ready for the next stage.
“We may have first place already assured, but finishing the group with a win in front of our own fans is the only way to go into the next round with a good taste in the mouth.
“So, against Tottenham, you can be certain we won’t change our pattern of play.
“Nobody will be relaxed or reserving strength or holding anything back.
“We will be the same Barca as always – with a very clear goal that we want to win the game.”
With their passage already confirmed, Ernesto Valverde could ring the changes but Vidal says Barcelona aren’t about to relax.
He added: “The reality is that, as a group, Barcelona wants to win every single trophy this season.
“It’s a special challenge that we have set ourselves.
“To do that we have to keep winning games and keep the right mentality.
“So will be it be a case of Barcelona relaxed and with many changes against Tottenham? I don’t think so.
“This team has an image, a way of playing and it’s present in every single game. That’s our focus.”