Adam Idah insists the Republic of Ireland do not fear Portugal as they prepare to go head-to-head with them in World Cup qualifying.

Stephen Kenny's men will line up against Cristiano Ronaldo, Bruno Fernandes, Bernardo Silva, Diogo Jota and their team-mates in Faro on Wednesday night with three Group A points at stake and none yet banked.

However, 20-year-old Norwich striker Idah is adamant they are not frightened by what lies ahead.

He said: "None of us have fear. There shouldn't be any fear coming into these games. You should be excited about playing against these players.

"These are the moments we've all dreamt of playing in, playing against the best players in the world, the best teams. The feeling is one of excitement. We're going to go out there and do the best we can.

"When you're the underdog, it motivates you that bit more because you know what people on the outside are thinking.

"As a team, it excites you that you want to play against these teams, prove everyone wrong, show what you can do. I'm so excited to play."

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Ireland could be forgiven for heading for Portugal in some trepidation having lost their opening two games in the campaign to Serbia and, damningly, Luxembourg.

But while Kenny's players are well aware of the task ahead of them, they remain confident there is more to come from them.

Idah said: "Obviously everybody knows how good Portugal are and the players they have in their squad. But we're Ireland and we've got so much belief in ourselves and have got so much talent in the squad.

"So we're not going to be fearful of them - we're going to go out and do the best that we can and play the best football that we can. We're just excited to get to play the game now."

Idah, who was handed his senior debut by Kenny as a 19-year-old in September last year, is still finding his feet at international level while trying to force his way into Daniel Farke's plans at Premier League Norwich, where he has made three appearance as a substitute so far this season.

He said: "I can't wait for it. World Cup qualifiers are something that every young boy would love to play in.

"I do feel that I have come a long way, but then again, there's a long way to go, so I'm just excited to see what happens."

Follow Portugal v Ireland with our live blog on RTÉ Sport Online and the RTÉ News app, watch live on RTÉ2 and RTÉ Player from 7pm and listen to live commentary on 2fm's Game On.