throw someone under the bus
US /θroʊ ˈsʌm.wʌn ˈʌn.dər ðə bʌs/
UK /θroʊ ˈsʌm.wʌn ˈʌn.dər ðə bʌs/

1.
يضحي بشخص, يخون شخص, يلقي باللوم على شخص
to betray or sacrifice someone, especially to save oneself from blame or difficulty
:
•
He decided to throw his colleague under the bus to avoid getting fired.
قرر أن يضحي بزميله لتجنب الطرد.
•
I can't believe she would throw me under the bus like that.
لا أصدق أنها يمكن أن تضحي بي هكذا.