Jami` at-Tirmidhi Book 48, Hadith 215
“O Allah, You are my `Aḍud and You are my Helper, and by You do I fight (Allāhumma anta `aḍudī, wa anta naṣīrī, wa bika uqātil).”
“The Messenger of Allah (ﷺ) said to us: ‘Hold fast to At-Tasbih, At-Tahlil, and At-Taqdis, and count them upon the fingertips, for indeed they shall be questioned, and they will be made to speak. And do not become heedless, so that you forget about the Mercy (of Allah).’”
“The best of supplication is the supplication of the Day of `Arafah. And the best of what I and the Prophets before me have said is: None has the right to be worshipped but Allah, Alone, without partner, to Him belongs all that exists, and to Him belongs the Praise, and He is powerful over all things. (Lā ilāha illallāh, waḥdahu lā sharīka lahu, lahul-mulku wa lahul-ḥamdu, wa huwa `alā kulli shai’in qadīr).’”