Praise be to Allah.
This hadith was narrated by al-Tirmithi in the: Book of the virtues of the Quran , Chapter: One who recites a letter of the Quran , what reward he will have. No. 2922. Also narrated by al-Imam Ahmad in his Musnad, no. 19795
Its isnad (chain of narrators) includes Khalid ibn Tahman of whom Ibn Hajar said: He is saduq (truthful) but was accused of being a Shi’i then he became confused. (Taqrib al-Tahdhib, 1644)
It was classed as da’if (weak) by al-Albani (may Allah have mercy on him). See Da’if Abi Dawud, 2922.
There are many dhikrs (words of remembrance) for morning and evening that are narrated in sahih (authentic) reports from the Prophet (peace and blessings of Allah be upon him). See some of them in question no. 12173 .
And Allah knows best.