Obtaining the Voivode's Letter of Safe Conduct in Kingdom Come: Deliverance 2's Miri Fajta questline involves several steps. This side quest is lengthy and requires careful navigation. Here's a detailed guide:
First, progress through the Miri Fajta quest at the Nomads' Camp until the Voivode reveals Marika possesses the letter.
Return to Marika in Apollonia. Assist her in repelling a wolf attack. During your conversation with Marika, select the dialogue options: "He cares about you," followed by "I swear." She will then disclose the letter's hiding place – a tree near a nearby river.
Retrieve the letter from the tree. Before returning to the Voivode, speak with Tibor. He will propose a wager involving a horse race and a fistfight for the letter and an amulet.
To improve your chances, consider obtaining the "Good Old Pebbles" perk before the race. Participating in unarmed melee tournaments beforehand will also benefit you in the subsequent fistfight with Tibor, who, while not exceptionally difficult, possesses superior combat skills compared to average opponents.
After winning the wager, you'll have the Voivode's letter of safe conduct. For further Kingdom Come: Deliverance 2 guides and walkthroughs, including acquiring the Royal Treasury Key and romancing Katherine, check out The Escapist.