Rishi: Traditionally ascribed within late Vājasaneyin collections to the ritual lineage (often left unspecified in the Saṃhitā itself for such formulas)
Devata: Āpaḥ and Oṣadhayaḥ (Waters and Plants) as purificatory powers
Chandas: Mixed/prose-like yajus-formula (not a strict ṛgvedic metre)
su̱mitriyā́ na ā́pa óṣadhayaḥ santu durmitriyā́s tásmai santu yó’smā́n dvéṣṭi yáṃ ca vayáṃ dvíṣmaḥ
Translation
May the Waters and the Plants be of kindly friendship unto us; but unto him be they of evil friendship—unto him who hateth us, and whom we ourselves do hate.