Your question contains your answer - "It only accelerates the citizenship process for religions that originate in India. Not sure what is discriminatory about that?"
You pick and choose which religions get an "accelerated" citizenship process (whatever that means). Also India has millions of muslims (or christians) whom you can deny citizenship because it is a "foreign" religion :)
You pick and choose which religions get an "accelerated" citizenship process (whatever that means). Also India has millions of muslims (or christians) whom you can deny citizenship because it is a "foreign" religion :)