Help with English - Greek Translation

Could someone please translate 'Guardian in the sky, forever by my side' for me. It is for a Greek mythology tattoo.

Thanks.

I see no-one has replied to your question.

I live part of the year in Greece, but I am not a native Greek speaker.  However, I believe the Modern Greek for your phrase is:

ΠΡΟΣΤΑΤΗ ΣΤΟΝ ΟΥΡΑΝΟ, ΓΙΑ ΠΑΝΤΑ ΔΙΠΛΑ ΜΟΥ.

This assumes you are addressing the Protector.  I can't tell you what it would be in Ancient Greek!

Hi,
you should consider 'Φύλακας άγγελος, για πάντα δίπλα μου'.

It literally translates in English as 'Guardian angel, for ever by my side'. Guardian angel it is widely used in everyday discussions in Greece.

Iam sending it in capital letters as well
'ΦΥΛΑΚΑΣ ΑΓΓΕΛΟΣ, ΓΙΑ ΠΑΝΤΑ ΔΙΠΛΑ ΜΟΥ'.

Cheers