Since the Callahan era, the team has been saying "until we can't be beat, won't be beat." I guess the correct version is "the team that can't be beat, won't be beat." Benning and Foreman were pissed.
I always thought huskerboard was doing it wrong based on our high school coach, who played for NU, said "the team" and I figured he of anyone would know the prayer. "Until" just sounds awful