CREATE TABLE table_56852 ("Team 1" TEXT, "Agg." TEXT, "Team 2" TEXT, "1st leg" TEXT, "2nd leg" TEXT)

Which Team 2 faced Team 1 from Barcelona?
SELECT "Team 2" FROM table_56852 WHERE "Team 1" = 'barcelona'
SELECT "Team 2" FROM "table_56852" WHERE "Team 1" = 'barcelona'