You and Roach walked to the meeting place, where Shepards plane waited to retrieve you both.

Right as you two got to him, Prices voice sounded over the radio, shouting not to trust him. It was too late. Shepards gun fired and hit you in the stomach, another shot rang out and Roach went down too.

When he and his men left, Roach crawled over to you, eyes wide and face pale. Shepards gun had hit his vest, but had missed yours, hence the blood pooling around your midsection.