fazed / phased are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
fazed: (verb) disturb the composure of.
phased: (verb) arrange in phases or stages. (verb) adjust so as to be in a synchronized condition.
fazed: f·EY·z·d
phased: f·EY·z·d
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)