Book of Deuteronomy
Scholars are in broad agreement that the publication of the Torah took place in the mid-Persian period (the 5th century BCE). The Book of Deuteronomy, composed in stages between the 7th and 6th centuries, mentions the "diseases of Egypt" (Deuteronomy 7:15 and 28:60) but refers to something that afflicted the Israelites, not the Egyptians, and never specifies the plagues.