After playing his part in United keeping a second successive clean sheet on Wednesday against Galatasaray, Vidic says the Reds are ready for what promises to be another test of character this weekend.
"These are the games you want to play in," he told MUTV. "There's always a good atmosphere, our fans give us great support at Anfield. We’ll go there to enjoy the game and play good football. We're in good shape at the moment, we have a few players back from injuries and I think we will prepare well for this game.
"If you look over the last few years, it doesn't matter how they are playing or how many points they've got, Liverpool always have a good game against United. They'll be strong, they'll be aggressive and they obviously have strong support from their fans.
"It's a different game. Form does not give any team an advantage. It's a game by itself. We have to think about that. We're not going there as favourites, we just have an equal chance of winning."