There are so many halal restaurants in Xian. Where is your concrete location, or hotel name in Xian? On the other hand, from Fengcheng Road, it is easily for you to take a taxi or city-bus to the famous Moslem Street(https://www.travelchinaguide.com/attraction/shaanxi/xian/moslem-street.htm) , where you could find halal restaurants one by one.

As for Indian food, you could taste it at some star-rated hotels. There is a popular Indian restaurant called Yin Du Cai Cai, located to the west of the Big Wild Goose Pagoda, a little far from Fengcheng Road.