When it came to the heat of the lightsaber he held Sarad was just as susceptible as the next individual. If he was cut by it he could expect a grievous wound which likely cauterized in the process but he'd become more accustomed to the palpable heat that it radiated, likely from wielding the lightsaber. One might say he'd acclimatized himself.
As
Alina Tremiru
took the decorative rod, ripping it from the wall and into her grasp Sarad started to answer her by saying...
"That's not---"
...he may have been about to tell her that her death wasn't his objective, just something that he would have been largely indifferent to but his words cut short when she threw the pole at him. His reaction came almost as quickly. Looking at her he'd been able to read her body language seeing as how it didn't appear she'd attempted any subtlety with her motions.
When she threw the rod at him Sarad side stepped, snapping the lightsaber he'd angled towards her aside to deflect the metallic projectile in a crackle of energy and a hiss of scorched metal that softened on impact. Sarad's gaze had flickered, his attention shifting briefly then he'd see her running when his focus returned to her. A small frown set itself across his features as his eyes settled on her retreating form.
She spoke but it fell on deaf ears, something about not letting it kill her. Sarad slid his left foot back behind him, turning it outwards as he manipulated the flow of the form through his torso and let it spread out across his limbs to augment himself before he sprung forward. Bolstered by the force he'd have carried himself further and faster as he launched at Alina from behind.
The Lightsaber he held flourished, angling itself out to his right while his knee rose and cocked forward in the process of Sarad launching himself at her. He'd attempt to slam into her from behind, driving a flying knee towards the middle of her back to send her reeling and off balance before the natural momentum of the maneuver let him land back on his feet...
"If the force wants you dead you'll never run far enough."
...it seemed strange to him, like he wasn't the first person who'd come looking for her however whereas he didn't know her except through their recent, brief interaction he had the feeling that anyone else who may have found Alina knew her much better.