diff --git a/src/arena/actions/__snapshots__/protect.test.ts.snap b/src/arena/actions/__snapshots__/protect.test.ts.snap
index c51409e..0e471fc 100644
--- a/src/arena/actions/__snapshots__/protect.test.ts.snap
+++ b/src/arena/actions/__snapshots__/protect.test.ts.snap
@@ -2,7 +2,7 @@
 
 exports[`protect should not get exp if protect enemy 1`] = `
 "*corporis* пытался атаковать *quisquam*, но у него не получилось
-_Защита_ *quisquam*: 📖43,*corporis*: 📖0"
+_Защита_ *quisquam*: 📖33,*corporis*: 📖0"
 `;
 
 exports[`protect should protect player 1`] = `
diff --git a/src/arena/actions/protect.test.ts b/src/arena/actions/protect.test.ts
index f82cc95..3708c2e 100644
--- a/src/arena/actions/protect.test.ts
+++ b/src/arena/actions/protect.test.ts
@@ -34,8 +34,7 @@ describe('protect', () => {
 
   it('should protect player', () => {
     game.players.players[0].proc = 1;
-    game.players.players[0].stats.set('pdef', 100);
-    game.players.players[1].proc = 0.1;
+    game.players.players[1].proc = 1;
 
     protect.cast(game.players.players[0], game.players.players[0], game);
     attack.cast(game.players.players[1], game.players.players[0], game);
@@ -45,8 +44,7 @@ describe('protect', () => {
 
   it('should not get exp if protect enemy', () => {
     game.players.players[0].proc = 1;
-    game.players.players[0].stats.set('pdef', 10);
-    game.players.players[1].proc = 0.1;
+    game.players.players[1].proc = 1;
 
     protect.cast(game.players.players[0], game.players.players[0], game);
     protect.cast(game.players.players[1], game.players.players[0], game);
diff --git a/src/arena/actions/protect.ts b/src/arena/actions/protect.ts
index f03174e..fca3272 100644
--- a/src/arena/actions/protect.ts
+++ b/src/arena/actions/protect.ts
@@ -49,10 +49,9 @@ class Protect extends AffectableAction implements PreAffect {
     const attackValue = initiator.stats.val('patk') * initiator.proc;
     const protectValue = target.flags.isProtected.length > 0 ? target.stats.val('pdef') : 0.1;
     const ratio = floatNumber(Math.round(attackValue / protectValue));
-    console.log('at', ratio);
 
     const randomValue = MiscService.rndm('1d100');
-    const chance = 20 * ratio + 50;
+    const chance = Math.round(Math.sqrt(ratio) + (10 * ratio) + 5);
     const result = chance > randomValue;
     console.log('chance', chance, 'random', randomValue, 'result', result);
 
@@ -82,7 +81,7 @@ class Protect extends AffectableAction implements PreAffect {
       }
 
       const protect = Math.floor(flag.val * 100) / pdef;
-      const exp = Math.round(expMultiplier * 0.8 * protect);
+      const exp = Math.round(expMultiplier * 0.08 * protect);
       defender.stats.up('exp', exp);
 
       return {