كتب : Hatem Maher
Argentinean in-form forward Lionel Messi netted the winner after 19 minutes to take his tally to 20 league goals.
He collected Xavi's deft pass in the area, skipped past two defenders before placing his shot into the bottom corner.
Barcelona, who are eyeing a 20th league triumph, are on top of the table with 78 points.
Second-placed Real, who beat Recreativo Huelva 1-0 later in the day have 72 points.