Ultimately the La Liga giants could not conjure up a second incredible fightback in a row as they did with Paris Saint-Germain, a goalless draw with Juve at Camp Nou sealing their fate.
"I will remember what happened in the first half in the Juventus Stadium for a very long time," Enrique told Sky Sports News.
"Our participation in this tournament this season has been unforgettable but we had a very poor first half in Turin and that has cost us dear.
"We tried with all our might, but we couldn't find the route to goal. We played a very poor first half in Turin and that has cost us dearly."
Barca mustered 19 shots at the Bianconeri goal but only managed to test Gianluigi Buffon once.