"To resist the pressure" means to refuse to be influenced or swayed by external forces or expectations. It implies maintaining one's own beliefs, values, or decisions despite facing opposition or persuasion. Full definition
Teaching children to question and think about social values helps them to be clear about their own values and strengthens their ability to resist pressure from peers, advertising and other media. (kidsmatter.edu.au)
The system is a gravity dam, meaning it relies on its own weight to resist the pressure of water that flows through it. (businessinsider.com)
And yet, it has still been criticized for not doing more to resist pressure from the authorities there. (fortune.com)