The Polish goal machine, who plays for Barcelona and also captains Poland’s national squad, found the back of the net in the 24th and 64th minutes of the game at Barcelona's iconic Camp Nou stadium.
Lewandowski has scored four goals in the Spanish top flight this season.
The 34-year-old was last month officially unveiled as a player for Barcelona after the Spanish giants confirmed they reached an agreement with German champions Bayern Munich for the transfer of the Polish striker.
Top scorer in Europe, FIFA Best Men's Player
Lewandowski was in May named the top scorer in Europe's biggest football leagues last season, with 35 goals for Bayern Munich. The Polish marksman won the annual European Golden Shoe award for the second time in a row, finishing well ahead of the rest of the pack.
The Pole in January won world soccer governing body FIFA’s 2021 Best Men's Player award, beating Argentina’s Lionel Messi and Egypt's Mohamed Salah.
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Source: IAR, PAP, Canal+