Mike Phillips has said that he is braced for a 'tough' match against France in Cardiff next week.
Wales are chasing their third Grand Slam in seven years following their 24-3 victory over Italy on Saturday.
"[France] have some great individual players, so we know it's going to be a massive game," the scrum-half said.
"Without a doubt it's going to be the toughest game of the championship.
"We need to concentrate on everyone doing their own tasks and performing well, and hopefully that will get us the win."
Wales are expecting a capacity crowd for the clash at the Millennium Stadium.
