pit (someone) against (someone else)

Translations
настраивать (кого-то) против (кого-то другого)
The competition pitted the two best friends against each other.
Соревнование настроило двух лучших друзей друг против друга.
Definitions
To set two people or groups in opposition to each other, often in a competitive or confrontational situation.
Words
pit

verb
противопоставлять