Shiva Purana

siva.sh/siva-purana/saturda-samhita/15/51

मम भक्तस्य नो शक्रो न वज्रं चान्तकोऽपि च ।। प्रभवेदिन्द्ररूपेण मयैव त्वम्विभीषितः ।। ५१।।

sanskrit

Neither Indra, nor the thunderbolt, nor even the god of death is powerful to molest my devotee. You have been terrified by me alone in the form of Indra.

english translation

mama bhaktasya no zakro na vajraM cAntako'pi ca || prabhavedindrarUpeNa mayaiva tvamvibhISitaH || 51||

hk transliteration by Sanscript