Oh God I entirely empathise - when I first had to present I very nearly bolted from the room as they introduced me, I was so terrified.
But I've had to do it over and over, approximately 20 times a year for the last 3 years. I'll never be a natural presenter, but I can only echo what others have said already. If I could give you three tips to get you through it, they would be;
Practice
Practice
Practice.
It sounds silly, but I don't just mean study your slides - actually stand up and speak to an empty room, and SAY OUT LOUD what you plan to say for each slide. Don't finish that slide until you've tripped over your words and had to rephrase, change it, adjust the wording or the inflection, etc.
Do it for every slide, and when you've finished go back and do them again - and you'll notice you feel more fluent on the 2nd run. Practice what it sounds like when you say those words, and know what the first thing you want to say is for each slide (particularly the first one), so it becomes familiar.
If you know what to say first with every new slide, the rest will follow. You know this stuff, have faith in yourself.
Good luck, as a fellow anxious presenter I am rooting for you. 