Last season's finalists go into the second leg of their quarter-final clash with the French club with Bath just those handful of points in arrears thanks to Scottish international wing Danielli scoring the Zurich Premership leaders' only try of a tight first leg contest at Stade de la Mediterranee.
"We can definitely make up the five-point deficit - and we are determined to do that," said the 24-year-old flier. "Beziers have a strong scrum and are also very good in the ruck and maul areas - they really pile in the numbers at the ruck. However, they play a fairly narrow game and that is something we can work on.
"But we have to work on our continuity, retaining possession and execution if we are to go through to the semi-finals.
"Because while the forwards played well over in France we let ourselves down in the backs and we must sharpen up in all areas.
"We are never happy to lose because we want to keep the winning momentum going and, although it is only effectively half-time over the two legs of the quarter-finals, we know we didn't play well over in Beziers and the plan is to go all the way in the Parker Pen Challenge Cup."
The tournament winner gains automatic qualification to next season's Heineken Cup competition and Bath Rugby will not want any repeat of the first half in Beziers.
"It really was one of those games of two halves," said Danielli. "We gave away far too much ball when we were playing against the wind in the first half and that allowed them to go 21 points up.
"Then in the second half we should have put one or two more chances away but failed to take those scoring opportunities. We cannot afford to do that again."
Bath captain Danny Grewcock echoed the "no repeat" warning of his ace wing.
"There is no doubt that this is the biggest game that we have played so far this season," said Grewcock. "Beziers have grown in stature as the competition has progressed and they possess one of the biggest packs in European rugby.
"We know that we were poor at the weekend and we are desperate to erase the memory of what was the poorest forty minutes of rugby that we have played this season. We are ready to fight back.
"This is an important competition for us and we want to get to the final and win it - it is as simple as that."
Coach John Connolly added: "There is no doubt that this Beziers eight is as strong as any as we have come up against this season. We will need to improve significantly if we are to overturn the five point deficit.
"We value this competition and the shot at some silverware is something that we would love to go for, so I am urging fans to get down to the Rec and shout us through to the semi-finals."