Phasmophobia is a multiplayer horror, though if you so wish you can play it in VR to make it a million times more terrifying! This game is not for the faint of heart, or for people who live next to neighbors who love complaining, as there will be screams of terror throughout the pitch-black of the night! The premise of Phasmophobia is that you and your friends are paranormal investigators, hunting down ghosts and proving to the world that the denizens of death are very real.
As a paranormal investigator, you are, of course, outfitted with various amounts of ghost-hunting gear to combat the horrors of hell, such as Ouija boards, UV lights, and a crucifix. How does the crucifix work in Phasmophobia? How do you use it?
The first thing you and your friends must do is work out what type of ghost is haunting the happy place, as using any random ghost-hunting gadget does not work! Evidence gathering is a must; use your night vision cameras, thermometers, or even witness a ghost event taking place to collect evidence. As you progress through the night, exploring the house, your sanity will drop steadily, and more paranormal activity will occur; once your sanity gets to 0, well, say goodbye to your life!
Fortunately, with your array of equipment, such items as the Crucifix can keep the ghosties at bay by suppressing unholy activity in the area, which in turn saves your sanity and your life! The Crucifix is there to prevent a ghost from entering it's haunting phase, so it has to be used before it hits this phase. When in a ghost's room, place a crucifix on the ground while it's passive; however, if the ghost haunting room is of considerable size, you might need a few of them scattered about in strategic locations to be safe!
Sadly, if the ghost is already in the haunting state, then that crucifix will accomplish diddly-squat; you might as well use it to bash your friends to death, as that's a more pleasant death than slowly losing your mind.
However, according to YouTube comments:
If you correctly figure out what kind of Ghost-type it is. And if it attacks you, you can use the crucifix and say (e'g action - go away "___type___" ), and it will stop hunting for a moment.
This tip might just save your life!