Barcelona defeated its host Real Madrid 4-0, on Saturday evening, in the 11th round of La Liga.
Lewandowski scored two goals for Barcelona, Lamine Yamal, and Rafinha in the 54th, 56th, 77th, and 84th minutes.
With this victory, Barcelona continued to lead the La Liga standings with 30 points, 6 points ahead of Real Madrid.
The match started with pressure from Real Madrid, as Kylian Mbappe ran and shot a ball that hit the outside net in the 2nd minute, but he was offside.
From a direct free kick to Barcelona, it reached Rafinha, who rose and headed it into the arms of Real Madrid goalkeeper Andriy Lunin.
Lamine Yamal set off completely alone with goalkeeper Andrey Lunin, but he shot amidst harassment from Rudiher, wasting the opportunity to score the lead goal in the 12th minute.
Peña excelled in blocking a powerful shot from Fede Valverde inside the area, but the Uruguayan was offside.
Pedri sent a missile shot from outside the area, which Lunin blocked in the 27th minute.
Kylian Mbappe opened the score with Real Madrid's first goal in the 30th minute, as he shot a falling ball over goalkeeper Peña, but the referee decided to review the video technology, which proved that the Frenchman was offside.
Lamine Yamal set off and shot a ball from outside the area, which went over the crossbar in the 37th minute.
The first half ended in a scoreless draw.
At the beginning of the second half, Lewandowski succeeded in scoring the goal to put Barcelona ahead in the 54th minute, as Casado passed him a ball deep into the Real Madrid defense, and he set off to be alone with goalkeeper Lunin and shoot down his left.
Just two minutes later, the Pole added the second goal, as he received a cross from the left side via Alejandro Balde, rose and shot a brilliant header down the left side of Lunin.
Kylian Mbappe tried to shoot, and his ball easily reached Peña's arms.
Mbappe received a deep pass and shot to the bottom right of goalkeeper Peña in the 65th minute, but the goal was canceled on the grounds of offside.
Lewandowski missed the hat-trick in the 66th minute, as he received a cross from Rafinha inside the area, and was in front of the empty goal and hit the post.
The response came from Bellingham, in the 70th minute, who received the ball to go one-on-one with goalkeeper Peña, but he failed to control it and the ball left the field.
Lamin Yamal added the third goal for Barcelona in the 77th minute, as he received a pass from Rafinha inside the area, and shot with his right force into the net.
Valverde fired a shot at the edge of the area, but goalkeeper Pena Ali blocked it twice in the 83rd minute.
Rafinha increased the score with the fourth goal, in the 84th minute, as he received a long ball from Martinez and went and shot a falling ball over goalkeeper Lunin, so that Barca scored 3 expensive points.