Here's a breakdown:
* eye: Like the word "eye"
* ZAY: Like the word "say"
* uh: A short, unstressed vowel sound, like the "a" in "about"
There are some regional variations, and some people might pronounce it with a more drawn-out "ah" sound instead of "uh" at the end. However, eye-ZAY-uh is the most widely accepted pronunciation.