Like a flitting sparrow, like a flying swallow, So a curse without cause shall not alight. Prov 26:2
Christ hath redeemed us from the curse of the law, being made a curse for us: for it is written, Cursed is every one that hangeth on a tree: Gal 3:13
Since we are in Christ and Christ has already been made a curse for us, hence even if there is a curse that is with a cause, it shall not alight in our lives as Christ has already absorbed our curse in His body on the cross, we need only to believe it.
Blessed are we … so blessed … in Christ …. 
