Rishi: Vedic tradition attributes many Indra-stotras to seers of the Bharadvāja/Viśvāmitra/Kaṇva circles; in VS usage treated as received mantra (śruti) without separate ritual r̥ṣi assignment.
Devata: Indra (Vṛtrahan)
Chandas: Triṣṭubh (RV-style stotra metre; adapted in VS recitation)
Samhita Patha (Devanagari)
आ तू न॑ इन्द्र वृत्रहन्न॒स्माक॑म॒र्धमा ग॑हि । म॒हान्म॒हीभि॑रू॒तिभि॑ः ॥
Transliteration
ā tū na índra vṛtrahan asmā́kam ardhám ā́ gahi | mahā́n mahī́bhir ūtíbhīḥ ||