How can submit an entity without one property changes?

Question

In modify condition I don't want to submit one of entity's property changes. for example :

entity 
{
prop1 {get;set}
prop2 {get;set} 
} 
list<entity>.foreach(entity=>{entity.prop1 += 1; entity.prop2 += 1});

both properties has changed but don't want prop2 changes submitted.