Income tax in Saudi Arabia?

Hi, I have been working with a Saudi Arabian Firm during AY 10-11 and 11-12 am I liable to income tax in India. If yes, how does the calculation go for a salary of more than 10 Lacs INR p.a. post conversion. However, I had expenses in Saudi Arabia too and the actual money transferred was much less to my Indian Bank Account. Regards, Saagar