relieve one of duties
relieve (someone or oneself) of (something)
1. To remove or lessen a burden on someone or oneself. Simply talking to someone can go a long way toward relieving yourself of stress or anxiety.
2. To remove someone or oneself from a job or set of responsibilities. The chief of police has been relieved of duty in the wake of the investigation into departmental corruption. I decided to relieve myself of the position to avoid any potential conflicts of interest.
3. To rob someone of something. There are plenty of thieves willing to relieve you of your belongings if you aren't paying attention.
relieve one of one's duties
Euph. to fire someone; to dismiss someone from employment. I am afraid I must relieve you of your duties. After the scandal, she was relieved of her duties at the embassy.