The Lord is everyone’s friend, but He is especially friendly to the surrendered soul. The simple process, therefore, is that a conditioned soul should remain surrendered to the Lord and the Lord will give him all protection to keep him out of the clutches of material contamination.
The living entity’s position is to be under the protection of the illusory energy or under Krishna’s personal protection. When a living entity is fully surrendered, he is under the direct protection of Krishna and Krishna gives him all the intelligence by which he can advance in spiritual realization.
Devotees generally do not fall down, but if circumstantially they do, the Lord, because of their strong attachment to Him, gives them protection in all circumstances.
The dust of the feet of a devotee, the water that has washed the feet of a devotee and the remnants of food left by a devotee are three very powerful substances.