Lewandowski was named man of the match after a comfortable 6-0 win for the hosts at Camp Nou on Sunday, news outlets reported.
The Polish forward struck in the 3rd minute, rounding the Mexican goalkeeper and finding the net from an acute angle.
Lewandowski then turned provider, twice setting up Pedri with inch-perfect assists, Polish state news agency PAP reported.
Still in the first half, the Poland captain went close to registering a brace, but hit the post from Dembele’s cross.
Lewandowski was in the thick of the action after the break, as well, before being substituted on 60 minutes, earning applause from the Camp Nou crowd and the "man of the match" award.
Sunday’s game was the final pre-season friendly for Barcelona. The Catalan giants are due to open their league campaign at home to Rayo Vallecano on Saturday, the PAP news agency reported.
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.
Lewandowski was earlier this year crowned the top scorer of Germany's Bundesliga premier league for the 2021/2022 season, his seventh such trophy since he began playing in Germany in 2010.
The 33-year-old, who captains Poland’s national team, 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.
(pm/gs)
Source: PAP, onet.pl, fcbarcelona.com