A man has told the ACT Supreme Court he cried as he begged an alleged home invader not to harm his cat during what he says was a two or three-hour ordeal at a Canberra home.

Key points: Canberra man says three men invaded his home to steal money from him and his friend

Canberra man says three men invaded his home to steal money from him and his friend The victim says he later smoked cannabis while one of the alleged attackers held frozen meat to his eye, which was hurt in the fracas

The victim says he later smoked cannabis while one of the alleged attackers held frozen meat to his eye, which was hurt in the fracas The man was cross-examined about why he didn't notice a woman in a toga had been in his bedroom for at least three days

The man, who has not been named, gave evidence on the first day of a trial of Kyle Joseph Butkovic, 27, and Ibrahim Kaddour, 24 — who are charged with forcing their way into the Canberra home with a third man in November last year.

They are also accused of assaulting and threatening another man over a large debt.

The witness said he was blinded by a "stunning" light when he opened the door in the early hours of the morning, before being hit in the chest with an electrical device.

"These men were proceeding to push me inside the apartment. I saw two men and then a third appeared," he said.

"The next thing I remember happening was I was led at knifepoint, and ordered to give them everything I had. I was being robbed, I guess."

The witness said two of the alleged intruders attacked his friend, who was visiting his home but had been asleep on the couch after taking cannabis and other drugs.

He said the alleged intruders were shouting at him, "Where's the money?", but could not remember how much they were asking for.

The witness later described going to his room to collect valuables with one of the alleged intruders, where he stroked his cat and begged the man not to hurt it.

Afterwards, the witness said he sat on the couch smoking cannabis as one of the alleged intruders held a frozen meat pack to his eye, which had been hurt in the altercation.

The witness told the court that, earlier that night, he and his friend had gone out drinking and returned home to play video games and take drugs.

'Inconsistencies' in evidence

Lawyers for the accused challenged the man's account, which included claims about a woman, whom he didn't know, who was asleep in his bedroom during the incident.

The witness said she had been there since a Halloween party at least three days before, still dressed in her costume: a Greek-style toga.

Lawyers for the accused dispute the man's account of the alleged invasion. ( ABC News: Ian Cutmore )

The witness said he stopped one of the alleged home invaders from harming her, pulling him off her after he saw the man run the blade of a knife up her leg.

He explained he had been unaware of the woman's presence because he had been in the process of moving.

But Mr Butkovic's lawyer, Beth Morrisroe, pointed out the witness's cat appeared to be living there already, which raised questions about whether his account was true.

Ms Morrisroe pointed to several inconsistencies between the man's evidence in court and his earlier statements to police.

She suggested what really happened was he had let the three alleged intruders in because they had struck an arrangement to help him sell drugs.

She also suggested the only time one of the men struck out at him was when he tried to hit one of them over the head.

The man denied that, saying he was a pacifist and a Buddhist.

The trial continues.