I think the best book about Jesus in India is " The unknown life of Jesus"
by the russian author Nikolai Notovitch. The book was written about
one hundred years ago, and is translated into many languages.
It suports the theory that christianity originated in India.
There are lots of things in the gospels that seems to have been taken
from the Upanishads and Bhagavad gita. It is obvous that the Upanishads
and probably even Bhagavad gita are much older than the gospels.