Very short phd interview presentation in just 2 slides
They want you to be very specific and very quick, that's fine. That's good.

Slide 1: Who are you? Your academic past, or some other relevant information (e.g. industry experience, if relevant to your future research). That should take about 1 minute.

Slide 2: What are your research interests? Did you do a masters, and if so what is it about, what was the main result? Other things that you'd be interested in doing during your years as a student. Here it's important not to veer too far off course. Especially if you're joining a "pre-defined" program, but showing additional interests is a good thing.

Both of these slides can be set up as bullet points that cover the main sentence from each point, with or without "reveals", up to your preference. And practice with a friend, and with yourself (record and time yourself).

Good luck!