Alisson buried his Champions League nightmares against Lionel Messi with a terrific save to deny him an important equaliser.
Brazil took the lead against Argentina in the Copa América semi-final clash thanks to Gabriel Jesus in the 19th minute.
But the Argentina captain, 32, found himself in a similar territory against Alisson as his side were awarded a free-kick.
And the Reds shot-stopper, 26, was not going to be beaten by Messi like he was in the first leg of Liverpool and Barcelona's Champions League semi-final clash.
The five-time Ballon d'Or winner whipped in a free-kick from 25 yards out into the top left corner of the net, only for Alisson to pluck the ball out of the air with ease.
The Brazil international continued to put on an impressive performance and kept a clean sheet in Brazil's 2-0 victory at the Mineirão.
Messi and his Argentine teammates tried to break the deadlock, but Jesus set up Roberto Firmino to double their lead in the second half and send La Albiceleste crashing out of the tournament.
And the Barcelona superstar went on an incredible rant after the match as he slated the "bulls**t" refereeing decisions.
Jesus, whose first-half opener was met with a deafening roar from the Brazil fans, claimed that he knew he would score in the clash against Argentina.
"I felt I would score. I'm not saying that because I scored. Other times I didn't say this," the 22-year-old Manchester City forward said.
"I was very confident... and I managed to score in a great team performance. Firmino set me up really well.
"I'm delighted, not for the goal but for the team... We scored the goals, we're all delighted about the match, about the commitment, about the performance.
"We have to play every match with this spirit."
The winner of Chile and Peru will travel to the Maracanã on Sunday for the Copa América final against Tite's Brazil.
But Lionel Scaloni's Argentina will have to play against the loser of Chile and Peru in a third-place playoff on Saturday at the Arena Corinthians.
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Featured Image Credit: PA