Certain is related to Positive. Positive is the opposite of Evil. Person does not want (to) Evil. Person does not want (to) Vulnerable. 
Working is the opposite of Protest. Protest is a synonym of Resist. 
Certain <--RelatedTo--> Positive <--Antonym--> Evil <--NotDesires-- Person --NotDesires--> Vulnerable 
Working <--Antonym--> Protest <--Synonym--> Resist 