The Reds secured a vital three points in their bid to secure a finish in the Premier League’s top four and book a place in next season’s Champions League competitions.
Liverpool looked to be heading for a fourth defeat in five meetings with Palace after Joe Ledley gave the home side an early second-half lead.
James Milner was sent off for a second bookable offence in a further blow to Liverpool’s chances of getting a result at Selhurst Park.
However, Firmino capitalised on Alex McCarthy’s mistake to equalise with 18 minutes remaining in the English capital.
And Christian Benteke came off the bench to win a penalty and dispatch his effort past McCarthy to seal three points.
Unsurprisingly, Firmino was in a good mood on Monday, as highlighted by the above video.
The Brazilian has scored eight goals and has made seven assists in 25 Premier League games so far this season.
MORE: Latest Man Utd news
MORE: Latest Arsenal news
MORE: The latest football news