1. MY-shay-el: This pronunciation is more common in the United States and emphasizes the long "a" sound in the first syllable.
2. Miz-ha-el: This pronunciation is more common in the United Kingdom and other parts of the English-speaking world. It emphasizes the short "i" sound in the first syllable.
Ultimately, the best way to know how someone pronounces Mishael is to ask them!