A group of second-year students from Athenry, Co Galway, have got some of the biggest names in Irish and British politics to reveal the special prayer which gets them through life's adversities.
In response to the pupils from the town's vocational school, who have compiled a collection of the favourite prayers of leading public figures, the Taoiseach, Mr Ahern, nominated A Prayer to St Francis Xavier.
The prayer seeks the "powerful intercession" of the Lord so as to be in a "state of grace" when the time comes.
The British Prime Minister, Mr Blair, went for a more evangelical option, A Psalm of the Sons of Korah.
It talks of great catastrophes, roaring waters and shaking mountains - presumably not what Mr Blair thinks might happen if Mr Ken Livingstone becomes London Mayor - and asks for God's power to still these forces. It ends: "Be still, and know that I am God."
The president of Sinn Fein, Mr Gerry Adams, submitted Ar n- Athair as his choice. "I think it is a very balanced prayer, though usually I have to concentrate on it to get that feeling, instead of just reciting it by rote".
"My most used prayer is Jesus Keep Us because I usually - in fact, I always - need his help. A bit like the Galway hurlers. Only joking!"
Ironically, his political rival, Ulster Unionist leader, Mr David Trimble, chose the same prayer , albeit the English language version. "In the Presbyterian tradition, all prayers other than the Lord's Prayer are extempore". (This means the Our Father is the only officially recognised prayer in the Presbyterian church.)
Mr Adams and Mr Trimble were not alone. Mr George Mitchell and Mr Brian Cowen also nominated the Lord's Prayer as their favourite. So though they're not always singing off the same hymn sheet, they are, at least, singing from the same prayer book.
The public will be able to read the prayers selected when the book is published next week.
Ms Mary Booth, the school's cathechist, said all the contributors co-operated "straight away" and responded to letters from the pupils on first request.
Despite the personal nature of the choices, some politicians liked to see their political values reflected in their favourite prayer. For instance, Labour's Mr Michael D Higgins was attracted to the "multi-denominational thrust" of the Lord's Prayer.
The Labour leader, Mr Ruairi Quinn, picked a quote rather than a prayer, from socialist James Connolly. In it Connolly says anyone who ignores the "shame and degradation" of the Irish people is a "fraud and a liar in his heart". Mr Quinn said he included the quote in his Christmas cards.