This is the level on the chart when the price is controlled by trader-sellers ("Bears" - see) and they do not allow the price to rise above this line, constantly making transactions to sell. You can arrange the resistance line yourself in your terminal. Select the top menu bar, above the price chart and click on the oblique line — trend. Set it so that it passes over the upper border of several recent well-marked fluctuations on the price chart. This is a resistance line. The price should start from the lower border, line support (see) and move to the upper boundary, line resistance and come back. If the price suddenly goes above this line, there will be a "breakdown" (see). This means that more people want to sell currency on the market than buy it.
Trading in financial markets involves substantial risks, including complete possible loss of investment capital. This activity is not suitable for all investors. High leverage increases the risk (Risk Disclosure).