SICILIAN NAJDORF!

I have been playing Najdorf variation for 2 years. I really like this opening but I have some problems.. for example after 6.Bg5 (1.e4 c5 2.Nf3 d6 3.d4 cd4 4.Nd4 Nf6 5.Nc3 a6 6.Bg5) I usually play 6...e6 and after 7.f4 Qc7 8.Qf3 Nc6!?..this is the point..I play Nc6 because Kasparov rarely played it..but if White continues 9. o-o-o with the ideas Bd3, Rhe1 I do not know how to fight.

Can someone suggest me some ideas for Black??