When they encounter the people that seek material gains, the Indians mostly respond in hostile way because they felt that they're being exploited.
When it come to religious teachings, it become really complicated.
Some indians could be really open minded about the new religion and willing to integrate their ancient religion with the new teachings in order to create a better harmony.
Some of them on the other hand, could felt insulted and undermined if the new teachings somehow do not match with their ancient religion, which could lead to confrontation.