lišiti

1. (someone + gen.) to deprive
   Sud ga je lišio prava na vožnju. — The court took away his right to drive.
   Rat je mnogu decu lišio detinjstva. — The war robbed many children of their childhood.
2. (lišiti se + gen.) to give up; to rid oneself of
   Nije želeo da se liši tog zadovoljstva. — He didn't want to deny himself that pleasure.
   Konačno se lišio te loše navike. — He finally got rid of that bad habit.
3. (someone + gen. of something unpleasant) to free; to relieve of
   Nova aplikacija nas je lišila mnogih problema. — The new app freed us from many problems.

The thing taken away is in the genitive: lišiti nekoga slobode. For the request 'spare me…' Serbian usually uses poštedeti: Poštedite me svojih saveta.