Barcelona moved seven points clear at the top of La Liga after Dani Olmo and Robert Lewandowski struck late against Espanyol.
Hansi Flick's side were frustrated until four minutes from time when Fermin Lopez set up his fellow substitutes to score the crucial goals.
First he played in Olmo to curl a superb strike into the top corner, before more good work by Lopez on the right teed up Lewandowski for a delightful close-range finish in the 90th minute.
Barcelona have scored 12 goals in the last 15 minutes of the second half, more than any other team in La Liga this season.
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