What is the correct grammar for this phrase was never affected?

The phrase "was never affected" is grammatically correct.

Here's why:

* "Was" is the past tense of the verb "to be."

* "Never" is an adverb that negates the verb.

* "Affected" is the past participle of the verb "to affect."

The phrase is in the passive voice, meaning the subject of the sentence is the one being affected.

For example:

* "The company was never affected by the economic downturn."

In this sentence, the company is the subject, and it was not affected by the downturn.