Why Dawn Of Islam Is Not Present In Roman History?
The reason is Persian and Romans both found arab as unfruitful land and considered waste of resources to occupy that. Hence no presence of them during those times. Naturally, it will be absent from their history. Once Muslims started making contact, document started to appear in roman history as early as 7th century. Even early syriac text has reported even what are muslim beliefs You can read a book about this topic Envisioning Islam: Syriac Christians and the Early Muslim World