Song is:
Nile - lashed to the slave stick
I like this song, but didn’t realised about this lyrics before. Do you know what does it mean ?
—lyrics–
…
Lashed to the Slave Stick.
Abata Ankh t Khet.
Neba t Steb Tcha.
Lashed to the Slave Stick.
Abata Ankh t Khet.
Neba t Steb Tcha.
Asfetiu.
—lyrics—
~Edit on entry.
If you read the first verse, it tells you. 
The song is about telling off someone the author thinks is a criminal, and hoping they get punished in some form of hell, basically.
A “slave stick” is a form of immobilisation similar to European medieval stocks, but used in Africa. Egypt, which seems to be the inspiration for this track, is on the same continent.
First verse:
Fiends, criminals, slaves, blasphemers
The word of Ra is against ye
Ye are fettered and bound with leather straps
Helpless, doomed, wailing in unendurable torment
Lashed to the forked slave stick by the neck
This is a long, heavy stick, the end goes at your feet, fork goes under the chin and it’s fastened behind the neck.
Thank you for your answer, it have good details.
But i was asking:
“Abata Ankh t Khet.
Neba t Steb Tcha.”
Part. Is it some kind of ritual ?
No idea, sorry. I assumed it was an attempt at ancient Egyptian spelled with English letters. Maybe try looking up interviews and the website of the artist and see if they talked about it? 
No, it is not a ritual. It’s basically just a pronouncement of punishment.
According to good ol’ Google, it apparently translates to “For your abominable acts, you shall be lashed to the slave stick.”
The whole song is basically an imprecation to the gods to punish someone for their evil deeds.
