The Brazilian netted twice in the second half to achieve the milestone
Roberto Firmino became the fourth Liverpool player to score 20 goals in the Champions League when he struck twice on Wednesday in the Champions League quarter-final second leg against Benfica.
Firmino has joined Mohamed Salah, Sadio Mane and Steven Gerrard as Reds players to reach that mark.
Liverpool drew 3-3 on Wednesday but defeated Benfica 6-4 on aggregate.
