Vinicius scored the winning goal in a 2-1 victory on the night to secure a 3-1 aggregate success for Real in the play-off tie in Madrid.
UEFA suspended midfielder Gialuca Prestianni from Benfica's Champions League play-off second leg against Real Madrid this week after he was accused of racially abusing Vinicius Junior.
Vinicius Junior is set to face Gianluca Prestianni again in the Champions League, just a week after accusing the Benfica player of racially insulting him.
Vinicius Junior was back on the score sheet for Real Madrid on Saturday, but the Brazilian was not able to prevent the Spanish league leader from falling to a surprise 2-1 loss to Osasuna.
Benfica player Gianluca Prestianni has denied racially insulting Real Madrid forward Vinicius Junior during a Champions League match when he covered his mouth with his jersey.
Madrid defender Trent Alexander-Arnold called the incident "a disgrace to football" while Benfica manager Jose Mourinho said Vincius had incited his players and fans by the way he celebrated his goal in the 1-0 win for Madrid.
Vinicius Junior scored and then alleged he had been racially abused during Real Madrid's 1-0 win away to Benfica in the first leg of their Champions League play-off tie on Tuesday, while Paris Saint-Germain came from two goals down to beat Monaco 3-2.
Vinicius Junior won and converted two penalties as Real Madrid thumped Real Sociedad 4-1 on Saturday to move provisionally top of La Liga.
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A day after a stunning last-minute loss to Benfica in the Champions League, Real Madrid returns its focus to La Liga knowing that it needs to improve.