Answer: Curiously, there are many similarities between these two religions, here it is mentioned three of them.
Explanation: First, each has a "main god" or "king of gods", Zeus (greeks) and Indra (hindu). Surprisingly, both share the same kind of weapon, a thunderbolt. Both are described as jealous, polygamous, and known for having children with mortal women.
Moreover, the netherworld is also mentioned by both religions, as well as the presence of a special dog that watches the gate of it.
Finally, the existence of a Holy Trinity in both religions:
- Brahma, Vishnu, and Shiva (Hindu)
- Zeus, Poseidon, Hades (Greek)