Final answer:
Byzantine influences on Islamic architecture in Iran include the use of mosaics and the incorporation of Byzantine visual vocabulary in book painting and manuscript illumination.
Step-by-step explanation:
Islamic architecture in Iran was influenced by Byzantine art and architecture in several ways. One example is the use of mosaics, which became popular in both Byzantine and Islamic buildings. The Dome of the Rock, a famous early Islamic shrine, was modeled after Byzantine commemorative structures and decorated with mosaics that emulated Byzantine models. Another influence is the incorporation of Byzantine visual vocabulary, such as the use of blue and gold coloring and angelic and victorious motifs, in Islamic book painting and manuscript illumination.