All three men have been instrumental in leading Ulster to a mouth-watering match up with Leinster as they target a repeat of their 1999 European success.
Their form on the continental and domestic stage has been rewarded with a nomination for the Bank of Ireland Ulster Player of the Year Award, a trophy won by South African scrum-half Ruan Pienaar last season.
Ulster hold their annual awards ceremony this Thursday at the Culloden Hotel in Belfast, nine days before they take on their Irish rivals at Twickenham Stadium.
Henry is currently an injury doubt for that end-of-season showdown in London but Ulster are hopeful the openside flanker will regain his fitness to form a powerful-looking back row alongside Stephen Ferris and Pedrie Wannenburg.
The 27-year-old, who has been described by head coach Brian McLaughlin as his most consistent performer over the past three years, was an ever present in the first seven matches of Ulster's Heineken Cup campaign but was unavailable for the semi-final after picking up a shin injury in the PRO12 defeat to Leinster in mid-April.
Afoa also missed the semi-final win over Edinburgh through suspension but the New Zealander has proved a sensational signing since joining from Auckland after winning the 2011 World Cup. The All Black tight-head played in five of Ulster's group games and the historic quarter-final win over Munster before being banned for the Aviva Stadium clash with the Scots as a result of a dangerous tackle on Felix Jones.
Inside centre Wallace is now nearing 50 Heineken Cup appearances for Ulster having played five times so far this term, including both knockout fixtures and the 41-7 hammering of Leicester Tigers back in January. A loyal servant to the province, his experience could be key on Saturday, May 19 against Leinster's veteran midfield partnership of Gordon D'Arcy and Brian O'Driscoll.