を祝って

to celebrate

→ を

phrase Rare #42,405

to celebrate Marks the occasion being celebrated; を introduces what is being celebrated.

JA: 合格を祝って、みんなで食事に行きました。

EN: To celebrate passing, we all went out to eat.

To celebrate Scott's return

— RRR (2022)

My friends celebrated my birthday.

Here’s to your success!

— 善き人のためのソナタ (2006)