sarve devah saharsibhih
naicchad bhito brhad-vadhat
sri-sukah uvaca—Sri Sukadeva Gosvami said; vrtra—of Vrtrasura; vikrama—by the powerful activities; samvignah—being full of anxieties; sarve—all; devah—the demigods; saha rsibhih—with the great sages; tat-vadhaya—for the killing of him; arthayan—requested; indram—Indra; na aicchat—declined; bhitah—being afraid; brhat-vadhat—due to killing a brahmana.
Sri Sukadeva Gosvami answered: When all the great sages and demigods were disturbed by the extraordinary power of Vrtrasura, they had assembled to ask Indra to kill him. Indra, however, being afraid of killing a brahmana, declined their request.
Link to this page: https://prabhupadabooks.com/sb/6/13/4