The first phase of the Darth Malak encounter is a brutal test of your party's resilience and offensive capabilities. Malak will primarily rely on his mastery of the Force, unleashing powerful Force Lightning and Force Wave attacks that can quickly decimate unprepared groups. He also wields a formidable lightsaber, capable of inflicting heavy damage with his melee strikes. During this phase, focus on keeping your party members alive through healing and defensive abilities. Your Force-sensitive characters should attempt to counter his Force powers with their own, disrupting his attacks and creating openings for your damage dealers.
It's crucial to manage Malak's health pool effectively. While you can damage him, his true vulnerability in this phase is tied to the captured Jedi he draws power from. You'll notice him periodically moving towards these Jedi to heal himself. Your priority should be to interrupt this process by attacking Malak before he can reach them. If you can prevent him from healing, you'll significantly prolong the fight and make it more manageable. Utilize your most powerful offensive abilities and Force powers to chip away at his health and disrupt his healing cycle. Don't be afraid to use your stims and medpacs liberally; this is the time to go all out.