A Stop with Protection order is similar to a stop limit order. The order is submitted with a Stop Price. When the contract trades at the stop price the order triggers, and is submitted as a limit order at the exchange-defined "protection" limit price.
To create a stop with protection order
Click the Ask price to create a BUY order, or the Bid price to create a SELL order.
In the Type field select STP PRT as the order type.
Define the Stop Price.
Transmit by clicking the "Transmit" button.
For a more detailed description of stop orders with protection, visit the Order Typesinformation page.