Hallo, Ori!
Leider verstehe ich kein Deutsch, das wurde also von Google übersetzt.
In Irish, to address multiple friends, we would just say " A chairde," which means "My friends,".
The direct translation to what you ask would be "Chuig mo chairde uilig", however I don't believe this translates well as it wouldn't be commonly used in Irish vernacular, rather a derivative of the English syntax, which was of course a further dilution of the German in which you originally posed the question! But perhaps someone else on the page could provide further insight to this.
I hope this answers your question. If you would like help with the pronunciation, message us on Facebook and I'd be happy to record myself saying it for you!
https://www.facebook.com/ionadnafuiseoige/Besten Wünsche,
Odhrán.