Test Your Blitz Skills

In honor of Alexander Grischuk's blitz championship win this past week, let's look at a position from a blitz (5 minute) game he played in 2004. The opening moves were

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nge2 Be7 5. g3 exd4 6. Nxd4 d5 7. e5 Ng4 8. Bf4 c5 9. Ndb5 d4

We have the position above. Grischuk played the best move. What did he play?