Reigning champions Juve head into Friday's match already boasting an 11-point advantage over third-placed Inter after 14 games of the season.
Allegri still feels Inter are part of a three-horse title race alongside his own side and Carlo Ancelotti's Napoli, but understandably believes Juve getting the win they need over the Swiss champions next Wednesday to ensure top spot over Manchester United in Group H will have a greater bearing on their season.
"Tomorrow is the Derby d'Italia. Regardless of where we are in the table it will be a fascinating evening," he said at a Thursday news conference.
"It will be a technical and mental test against a team that has grown a lot and that, together with Napoli, are our rivals for the Scudetto.
"Together with Napoli, they are the anti-Juve at the moment. I do not think the others play for second place. Ancelotti says it all the time, we still have three head-to-head matches, the rankings could change.
"For us next Wednesday's game is more important because we're playing for first place in the Champions League [group]. Tomorrow against Inter is just one game."
Emre Can could come into contention after two months on the sidelines with a thyroid issue but fellow midfielder Rodrigo Bentancur will be assessed due to a back complaint.
Cristiano Ronaldo will be expected to lead the line once more, with the Portuguese boasting eight goals in his last 10 appearances.