Surah An-Nahl — Ayah 82 (16:82)
فَإِن تَوَلَّوۡاْ فَإِنَّمَا عَلَيۡكَ ٱلۡبَلَٰغُ ٱلۡمُبِينُ ٨٢
English translation (Saheeh International)
But if they turn away, [O Muḥammad] - then only upon you is [responsibility for] clear notification.
Brief commentary
If they turn away from faith and acceptance of what you have brought, then your duty, O Messenger, is only to convey what you have been instructed to in a clear manner. It is not your duty to make them accept guidance.