The Messenger of Allah ﷺ commanded me to recite the Muawwidhat after every prayer.
حدثنا هارون حدثنا ابن وهب حدثني الليث عن حنين بن أبي حكيم حدثه عن علي بن رباح اللخمي
أمرني رسول الله ﷺ أن أقرأ بالمعوذات دبر كل صلاة
Its isnad is sahih. Its narrators have already been mentioned, and Hunayn bin Abu Hakeem al-Umawi is deemed trustworthy. The hadith was narrated by Abu Dawud 2/181, no. 1523, Tirmidhi 5/171, no. 2903, and Nasai 3/68, no. 1336. The hadith has already appeared with similar wording. See 17255, 17232.