Lunch near NYU during Passover???
Are you looking for someplace to approximate a kosher-for-Passover meal, or is one of your party intolerant of wheat? I suspect it's the former, in which case rice & corn are out.
Dojo has a lot of salads:
B&H (which is very small, so if your group is 4+ you'll have to split up) has matzoh brie and a lot of soups & omelets: