Genia missed eight Tests in a row at the back end of this year and he still doesn't expect to return to domestic action until the Super XV clash between the Reds and the Bulls in Brisbane on March 23.
But the length of his lay off isn't causing him any sleepless nights and both he and Wallaby boss Robbie Deans are convinced he can be back at his best by the time of the first Test on June 22.
"If I'm going to be realistic, it'll be round six that I'm back. If I'm back in round six, I get two months to play footy," said Genia.
"Robbie and I discussed when I'd be back and I said to him, 'That's more than enough for me to be ready,' and Robbie agreed with that.
"To be able to represent your country in a once in 12-year opportunity would be amazing. It's the best of England, Wales, Ireland and Scotland and I really want to be there.
"We want to entertain and play rugby people want to watch. If we beat them it will prove a lot about our team."
Genia expects to be joined by clubmate Quade Cooper when the Wallabies take on Britain and Ireland's elite despite the controversy surrounding Cooper's recent rants regarding his coach and his country.
Cooper signed a new two-year deal with the Wallabies and the Reds on December 7 as he looks to put his public outburst in which he criticised Deans and described the Aussie camp as toxic behind him.
No one yet knows whether the maverick fly-half's relationship with Deans can be fully repaired but Genia insists he saw no sign of tension when he and Cooper and Wallaby captain James Horwill met up with Deans to discuss the Lions tour earlier this week.
"I don't think there's any issues there," added Genia.
"It was Robbie, me, James and Quade. We all sat down and talked about the Lions tour, dates of the camps, what they will be about and all those sorts of things, plus a bit of content about footy.
"There's absolutely no issues there at all from what I saw."