It is called an amparo in the Latin American traditions.
It's infinitely simple to make and use, and I always love hearing from those who tried this technique and just were wowed by the effectiveness.
I did want to make one note to the video here, and that in the clip I list 3 herbs that one can use in an amparo. You can use whatever protection herbs you feel are appropriate for your work. I usually use a blend of 7 herbs that are dressed with Fiery Wall of Protection in the amparos that I make and use. You don't have to use 7, you could use none, or 1, or 3, or whatever spirit leads you to use.
With that said - enjoy!