The result will mean a fourth round replay at Kassam stadium.
Robinson said, "It's incredible. We've played three Premier League teams this season and only one of them has beaten us - Manchester City. So I have got to give credit to my players.
"For the fans who turned out, it just shows you this cup has got a wonderful presence. My players were exceptional. Probably say we got the best chance of the game. All in all a very good performance by my players and I am very pleased with them.
"I thought we tried to play, which was brave of the players. We started nervously and I wasn't happy. I told them to relax and once they did that they got to grips with the game a bit more."