One driver turning up for his shift in the adjacent Phibsboro garage on Sunday morning told the Irish Times: "We're all in syndicates. They just happened to win. If I had won the lottery, would I be here?"
The National Lottery agency in Ireland declined to confirm where the ticket was sold and said it will be some time before the location is revealed. They advised the winners to sign their tickets and keep them safe.
It is not the first time the Euromillions jackpot has been won by a player from the Republic. A syndicate involving a group of friends won €66 million in January, the Irish Times reports.
The twelfth highest jackpot in the competition's history was won by Dolores McNamara from Co Limerick when she took home €115 ($178 million), 436,126 in July 2005.
Other winners in Ireland have scooped the jackpot with wins of €94m, €29.4m and €15m.
EuroMillions is played in nine countries - Austria, Belgium, France, Ireland, Luxembourg, Portugal, Spain, Switzerland and the UK.