LeBron James -- Saves Justin Bieber ... Crisis Averted

Cleveland can stop holding its collective breath ... the LeBron vs. Bieber crisis is officially over ... and somehow, they both emerged victorious.

As we previously reported, Justin's "Purpose" world tour was scheduled to touch down at the Quicken Loans Arena in Cleveland on April 26th ... the same night as Game 5 in the Cavs vs. Pistons series.

The two sides were scrambling to work out a plan -- (with the Bieber concert likely to get bumped to a later date) -- but to everyone's surprise, the Cavs SWEPT the Pistons in 4 games!!!

Translation -- the concert will go on as planned and everyone is happy!!