Is it compulsory or recommended to recite and BLOW ayathul kursi all over the body or even blow in our hands and rub over our body (for protection) or just reciting it would be sufficient
It is not from the sunnah to recite it and blow and rub for protection. This is done only for healing when a person is sick.
PROTECTION: You must maintain your 5 daily prayers on time without fail. Fix a time for reciting Qur’an everyday.
Maintain your daily adhkar of morning and evening, before going to bed, after every fard prayer, while entering the washroom, while going out of the house, before eating etc and this will act as a shield against everything evil with the Mercy of Allah. You will find these duas in a booklet called ‘Hisnul Muslim’ or ‘Fortress of the Muslim.’
RUQYA FOR CURE: Do ruqya on water, preferably zamzam and drink lots from it throughout the day and night and also bathe with this water until you’re cured by the will of Allah.