を呼びに

to go call

→ を
phrase Uncommon #11,082
to go call Used with 行く or やる to express going or sending someone in order to call someone. For example, 医者を呼びに行く means “go call a doctor.”
JA: 彼女は助けを呼びに走った。
EN: She ran to call for help.

を呼びに行ったの

Did you go get him?

— 罪人たち (2025)

クウさんを呼びに遅い

You're taking a long time to go get Kuu.

— 花様年華 (2000)

父はかかりつけの医師を呼びにいった

My father went to get our family doctor.

タクシーを呼びに行った

I went to call a taxi.

— きっと、うまくいく (2009)