на него внимания

attention to him

→ на
phrase Uncommon #20,821
attention to him Usually appears in the expression не обращать внимания на него, meaning “to ignore him” or “not pay attention to him.”
RU: Пожалуйста, не обращай на него внимания.
EN: Please don't pay attention to him.

А я не обращал на него внимания.

But I didn't pay any attention to him.

— Жан Де Флоретт (1986)

Не обращайте на него внимания.

Don't pay any attention to him.

— Цветы войны (2011)

Она просто не обращала на него внимания.

She simply didn't pay attention to him.