If you are trying to project as though Buddhism declined because of Hindus or Hindus persecuted Buddhism, you are totally wrong.
A couple of Hindus were definitely anti-Buddhist, but many other kings encouraged and spread Buddhism (inclusding Ashoka).
Hindus never considered in the past or present as though they were opposed to Buddhism. In fact, Hindus can never oppose any religion, leave alone Buddhism. Because the basic thought in Hindus is that God can be worshipped in several forms and in several ways.
Even if Buddhism preached a diametrically opposite philosophy, Hindus would still welcome it, because Hindus believe that there can not be one single definition of God. Tolerance is inbuilt into our religion.
