In a report recorded by him, the words are: "Whoever recites these words in the evening:
'A'udhu bi-kalimatillahit-tammati kulliha min sharri ma khalaq' (I seek refuge in all the perfect words of Allah Almighty from the evil of everything He has created).
The Prophet (peace and blessings be upon him) says: nothing will be able to harm him."
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأذكار / 17024