Hard to stand up to your parents when you're raised in that religion and are taught to be submissive to authority, but it has to be done at some point in time. It's also hard to stand up to your parents when you are dependent on them for some of your finances.
If you don't want to go, you can say that you don't want to go and find some way within a few weeks to make up for the financial loss you will feel. Try alternate transportation and another part time job! Independence is a FINE feeling, and is a great motivator, too!