ничего о нем не

don't know anything about him

→ ничто
phrase Rare #38,778
don't know anything about him This phrase is usually followed by a verb; the verb can change the meaning, as in «ничего о нем не слышал» (“haven't heard anything about him”).
RU: Я ничего о нем не знаю.
EN: I don't know anything about him.

Я ничего о нем не знаю.

I don't know anything about him.

Ты ничего о нем не знаешь.

You don't know anything about him.

— Поле чудес (1989)

Мы ничего о нем не знаем.

We don't know anything about him.

— Тайна в его глазах (2009)

Я два года ничего о нем не слышала.

I haven't heard anything about him for two years.

— Возвращение (2006)

Мы ничего о нем не знаем, Лорна.

We don't know anything about him, Lorna.

— На холостом ходу (1988)