Papu Gomez put Sevilla ahead after half an hour off a corner in Seville connecting with an Ivan Rakitic cross but Uruguayan defender Araujo headed in the equaliser just before half time in Seville.
The hosts played half an hour a man down after Jules Kounde was sent off in the 64th minute for throwing the ball at Jordi Alba.
But Barcelona failed to take advantage despite chances with Gavi sending a header wide and Ousmane Dembele hitting the post late.
Xavi's Barcelona missed the chance to go fourth and move up one place to seventh, 15 points behind Real Madrid.