umaga ready for  fearsome  lions all blacks captain tama umaga has warned the british and irish lions will be his most fearsome opponents yet ahead of their summer tour.  but umaga  in england for saturday s irb rugby aid match  also backed new zealand to win the three-test series against the lions. he told bbc sport:  it s potentially the most fearsome line-up i ve ever come up against. they re awesome.  but i d back us all the way to beat them when they come over.  lions boss sir clive woodward is set to announce his squad for the june-july tour next month.  when woodward was appointed last year  it was widely believed he would rely heavily on his former england players. but umaga said:  he d be hard pushed to do that now considering the shape of the six nations.  don t get me wrong  england have got a lot of talented guys and i m sure there are some of them who ll make the lions test xv.  but you can t disguise wales and ireland in particular. some of the tries they ve scored have been great. i ll admit it ll be fairly awesome lining up against the likes of brian o driscoll.   umaga will meet o driscoll in saturday s rugby aid match at twickenham  with the irish captain leading the northern hemisphere side. o driscoll is among a host of players in the northern hemisphere squad  coached by woodward  that are tipped for lions call-ups.  it ll be good for us to get an early idea of some of these guys  although a lot can change between now and june   umaga said. the 31-year-old admitted interest in the lions tour was immense  calling it  the biggest thing to hit new zealand since lord of the rings . he added:  as players  it s enough for us to be driven by the rarity of playing the lions. in fact  it s not just us all blacks - it s the talk of the country.   umaga admitted the fear of injury weighed on his mind ahead of saturday s charity game  which features a host of big names including george gregan  andrew mehrtens and chris latham. but he admitted the value of the cause - proceeds of the match will go to aiding victims of the tsunami - easily won him over.  the second [southern hemisphere coach] rod macqueen made the approach  i didn t hesitate. it was great when new zealand rugby then gave me the all clear.  thankfully i didn t know anyone that was involved in the tragedy of the tsunami but you couldn t miss all the horrific reports on the news.  there are so many people that were affected  are still affected and will be affected for a long time. it s just good to know we can do something minor to help out.   - the match will be televised on bbc one at 1400 gmt on saturday.