When Raavan had abducted Seetaa, Vibheeshan advised him not to do so and return Her to Raam many times for which he was always abused. At last he had to leave his brother and he came in the refuge of Raam. There he helped Raam and Lakshman a lot in killing Raavan, Kumbhkarn, and Meghnaad. He helped Him in saving their lives also. It was he who informed Raam about Meghnaad's Yagya for immortality and took Lakshman there to destroy his Yagya and kill him before completing his Yagya. Besides, he always helped Raam to assess Raavan's situation, recognizing his spies, and informing about his army and Lankaa.