Messi's incisive pass started a
move that Neymar finished off in the 17th minute after Suarez coolly let
the ball run between his legs.
Suarez then crossed for Messi to double the visitors' advantage in the 25th.
It
was Messi's 47th goal in 48 games, while Neymar netted his fourth goal
in five matches, and his 31st in all competitions this season.
Barcelona
lost left back Jordi Alba to back-to-back bookings in the 54th after he
continued to protest, but the pacesetters didn't miss a beat, and three
minutes later Messi hit the post.
Espanyol also finished with 10
men after referee Mateu Lahoz showed two yellow cards just moments apart
to Hector Moreno for complaining in stoppage time.
Barcelona leads the league by five points from second-place Real Madrid, which visits Celta Vigo on Sunday.
