The reigning world champions advanced after a hard-fought victory over the African debutants and expect another stern test against Egypt as they seek a place in the quarter-finals.
Midfielder Leandro Paredes said the tournament had shown how competitive international soccer had become, pointing to the unpredictability of recent results such as Brazil's 2-1 defeat by Norway on Sunday.
"We are aware that all the national teams are very competitive. Anyone can beat anyone," Paredes told reporters on Monday in Atlanta.
"Obviously, seeing Brazil out of the tournament attracts attention, but there are no easy matches. All the teams are very well prepared."
Defender Nahuel Molina said he expected Egypt to pose a significant challenge, adding that the North African side would be highly motivated and well prepared.
"In the end, nobody gives you anything. Every opponent studies you, everyone gives their life for their national team," Molina said.
"On our side, as always, we'll try to be the protagonists and represent Argentina in the best possible way," he added.
Argentina face Egypt on Tuesday in Atlanta, with the winners progressing to play Switzerland or Colombia.
FIFA World Cup 2026
The 2026 World Cup is taking place from June 11th to July 19th in the United States, Canada and Mexico. The tournament features 48 national teams and is played at 16 modern stadiums.
Match schedule and times | Group standings and knockout bracket | How to watch the World Cup | World Cup Format | Past winners of the tournament