Lord can protect one from the most dangerous type of fear.
A devotee of the Lord is always fearless because of the protection given by the Lord.
If God wants to kill somebody, nobody can protect him and if God wants to protect him, nobody can kill him.
Brahmanas are the symbol of spiritual education, and cows are the symbol of the most valuable food (milk production & Butter); they must be given all protection.. that is real advancement of civilization.
The Lord protects everyone, but one who depends completely upon Him is especially looked after by the Lord.
Srimad Bhagavatam 1.8.8,
To protect ourselves from Kali we have to be honest, sincere and should not keep ulterior motive-. Hence we became instruments of Maya. We should strive to live by the teachings that Srimad Bhagvatam has left with us.