The thing is to relax, pray, and be at peace. Oils like spikenard, rose, or other essences are nice for relaxing the body and mind, but are not fundamental for developing equanimity and serenity.
Equanimity and serenity are born from concentration and self-observation of those elements that incite you to acts of fear.
However, to aid us with emotional struggles and negative elements of the heart, the magic of the roses and sacred rites of rejuvenation are excellent. These help to empower our consciousness in order to meditate.
For thirty years I sought God. But when I looked carefully I found that in reality God was the seeker and I the sought. -Bayazid al-Bastami