SB 6.18.64
ma bhaista bhrataro mahyam
yuyam ity aha kausikah
ananya-bhavan parsadan
atmano marutam ganan
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
When Indra saw that actually they were his devoted followers, he said to them: If you are all my brothers, you have nothing more to fear from me.