It’s a made-up enn.
Lirach tasa [insert spirit name] are common nonsense words used in the religion of demonolatry to worship whatever spirit you use the name if here.
It’s basically a chant to call the entity in a devotional way.
There’s a post here about a possible dictioanry for these things, but they’re channeled so they are mostly UPG and arbitrary.
They’ll work just fine as long as you set your intention right, because they’re not magical at all, it’s your intention that matters anyway.