It would be helpful to know what path this person is from. Let me guess, it is voodoo? You mentioned tricks.
There are a number of things. I can think of many.
You can make a prayer and say prayers to St. Michael. You can recite some of the Psams and the verses.
Here is the prayer to St. Michael.
'St. Michael, Archangel, defend us in battle. 2?
Be our protection against the wickedness. 2?
And the snares of the Devil. 2?
May God rebuke him, we humbly pray. 2?
And do thou, O Prince of the Heavenly Host. 2?
By the power of God, thrust into he'll Satan and all the other evil spirits who prowl about the world. 2?
Seeking the ruin of souls.
Amen (Let it be so).'
By, Pope Leo XIII
Here is the prayer to St. Joseph, for protection.
'Gracious St. Joseph, protect me and my family from all evil as you did the Holy Family. Kindly keep us ever united in love of Christ, ever fervent in imitation of the virtue of our Blessed Lady, your sinless spouse, and faithful in devotion to you. Amen (Let it be so).'
Say these prayers and light a candle and incense, and say, 'In the name of the Father, the Son, and the Holy Spirit. Amen.' Then make a cross sign in the air. Then recite your prayers.
Here are some Psalms you can recite. One for different purposes.
Protection from enemies, recite Psalms, 44 and 46.
To help make your enemies into your friends, recite 16
To drive away evil spirits, recite 10 and 19.
To free yourself and drive away evil spirits, recite 29 and 40.
For some reason, I think you should really recite, 29.
And to stop curses, recite 7, 91 and 120.
Do and say these over a candle, for 7 days straight.
Also id you feel like you are being attacked at night, walk around your house three times, clockwise. And recite some prayers and Psalms. I think this should be good for now. You can also say this prayer over oil yo make it represent the blood of the Christ, 'In the name of the Father, The Son and The Holy Spirit, I make this oil into the blood if the Son, The Christ. Amen.'
Then you make crosses with the oil over your door ways, at all the windows and at all the rooms. The oil is a representation of the blood of Christ.