When I first read your story, I've been wondering how can I assist you in the best way possible. For days, I've been sending you well wishes. We have similar life-changing experiences in the regard to beautiful transformation in addition to Divine Love/Oness, etc. I don't have evil entities telling me things BUT I've had awful experiences that could possibly rival your same experiences. I too have a similar background with spirituality and religion.
I'd like to share some powerful words with you that are ancient that could be of some assistance. I've said them when encountering things and has seemed to help greatly. It is said that the following is so powerful that the vibration of Light can only hold it -- we are made up of this vibration as well -- all loving and divine beings throughout the Universes know this vibration and are invited into your presence when you chant the following:
"KODIOSH KODOISH KODOISH ADONAI TSEYBAYOTH" -- translation, "HOLY HOLY HOLY IS THE LORD GOD OF HOSTS"
Thoroughly study the words Holy and Hosts, and every word in the above.
In my studies, I 've come to learn that the word YHWH (Yod Heh Vod Heh) was substituted for God by Christianity. The Hebrew 4-letter-name for God is very powerful and has great meaning (something worth studying and you'll find that there are variations in spelling). It came to me that perhaps centuries ago people were restricted from saying the original name to take away their Light and Connection for dumbing down purposes. It may be worth it, to say the words aloud (repeatedly) and feel the power for yourself. I think you may get it and it could possibly help.
Lastly, this one of the oldest and ancient mantras around that you might be familiar with of Buddhist origin: